In the field of transportation infrastructure construction, bridges serve as vital links connecting regions, promoting economic and social development. Among the diverse types of bridges, steel truss bridges have long occupied a prominent position in global infrastructure projects due to their unique structural advantages, reliable performance, and wide adaptability. As a professional integrated industrial and trade enterprise specializing in the production and sales of steel truss bridges, EVERCROSS BRIDGE TECHNOLOGY (SHANGHAI) CO., LTD. is committed to providing high-quality and cost-effective steel truss bridge solutions that comply with various international bridge design standards. We will comprehensively explore the definition of steel truss bridges, their advantages, characteristics, application fields, mainstream international bridge design standards, the application of BS5400 in Sri Lanka, and the multi-dimensional demand for steel truss bridges in Sri Lanka. Finally, we will answer key questions about installation, technical support, and after-sales services to help global partners, especially those in Sri Lanka, gain a comprehensive understanding of our products and services.
A steel truss bridge is a type of bridge whose main load-bearing structure consists of a truss composed of steel members connected by nodes. The truss, as the core component, is formed by arranging and combining steel rods (such as angle steel, channel steel, I-steel, and steel pipes) in a specific geometric pattern (common forms include triangular truss, quadrangular truss, and polygonal truss). The nodes, which are the connection points of the truss members, can be rigidly connected or hinged, ensuring that the force is evenly transmitted between the members.
The basic working principle of a steel truss bridge is to convert the vertical load (such as vehicle weight, pedestrian weight, and self-weight) and horizontal load (such as wind load, earthquake load) acting on the bridge deck into axial tension or compression forces on the truss members. Compared with other bridge types (such as concrete bridges, arch bridges), the steel truss structure effectively reduces the self-weight of the bridge while ensuring the structural strength, making it have obvious advantages in spanning capacity. In addition, the steel truss bridge has the characteristics of standardized component production, convenient transportation, and quick on-site assembly, which can greatly shorten the construction period and reduce the impact of construction on the surrounding environment and transportation.
According to different classification standards, steel truss bridges can be divided into various types. For example, according to the location of the truss, they can be divided into through truss bridges (the truss is above the bridge deck), deck truss bridges (the truss is below the bridge deck), and half-through truss bridges (the truss is between the upper and lower bridge decks); according to the span length, they can be divided into small-span steel truss bridges (span less than 50 meters), medium-span steel truss bridges (span 50-150 meters), and large-span steel truss bridges (span more than 150 meters); according to the use function, they can be divided into highway steel truss bridges, railway steel truss bridges, and highway-railway dual-purpose steel truss bridges.
As a professional manufacturer and supplier of steel truss bridges, EVERCROSS BRIDGE TECHNOLOGY (SHANGHAI) CO., LTD. has always adhered to the core concepts of "quality first" and "customer-oriented", and our steel truss bridge products have obvious advantages in quality, price, and compliance with international standards. The specific advantages and characteristics are as follows:
The quality of steel truss bridges is directly related to the safety and service life of transportation infrastructure. We strictly control the quality of raw materials, selecting high-quality carbon structural steel, low-alloy high-strength steel, and other materials that meet international standards (such as GB/T 700, ASTM A36, EN 10025). Before entering the production process, all raw materials must undergo strict quality inspection, including chemical composition analysis, mechanical property testing, and surface quality inspection, to ensure that they meet the design requirements.
In the manufacturing process, we adopt advanced production equipment and precision processing technology. The steel members are processed by numerical control cutting, automatic welding, and precision grinding, which ensures the dimensional accuracy and welding quality of the members. Our welding operators have professional certification (such as AWS D1.1, ISO 9606), and the welding seams are subject to non-destructive testing (such as ultrasonic testing, X-ray testing) to ensure that there are no defects such as cracks and porosity. In addition, we have established a complete quality management system, passing ISO 9001 quality management system certification, to monitor the entire production process from raw material procurement to product delivery, ensuring that each steel truss bridge product meets the highest quality standards.
As an integrated industrial and trade enterprise, we have our own production base, which realizes the integration of raw material procurement, product manufacturing, and sales. This integrated model effectively reduces intermediate links and transaction costs, enabling us to provide customers with high-quality products at competitive prices. Compared with similar products in the international market, our steel truss bridges have obvious price advantages under the premise of ensuring the same quality level.
In addition to the competitive initial purchase price, our steel truss bridges also have the advantage of low overall cost during the whole life cycle. On the one hand, the steel structure has good durability and corrosion resistance (after professional anti-corrosion treatment such as galvanizing and painting), which reduces the frequency of maintenance and repair and the corresponding maintenance costs. On the other hand, the standardized design and modular production of our products enable quick on-site assembly, reducing construction time and labor costs. At the same time, the light weight of the steel truss bridge reduces the requirements for the bridge foundation, which can also save the cost of foundation construction in some cases.
We fully understand that different countries and regions have different requirements for bridge design and construction. Therefore, our steel truss bridge products are designed and manufactured in strict accordance with various mainstream international bridge design standards, including BS5400 (British Standard), AASHTO (American Association of State Highway and Transportation Officials), Eurocode 3 (European Standard), JIS (Japanese Industrial Standard), and GB (Chinese National Standard). This ensures that our products can meet the technical requirements of different markets and smoothly pass the local quality inspection and acceptance.
Our professional technical team has in-depth research and rich experience in international bridge design standards. They can carry out personalized design according to the specific requirements of customers and the local standards of the project location, ensuring that the product is perfectly adapted to the local construction environment and use needs. Whether it is a highway bridge, railway bridge, or a special-purpose bridge in a harsh environment, we can provide corresponding solutions that comply with international standards.
Strong Spanning Capacity: The truss structure of the steel truss bridge has excellent force-bearing performance, which can achieve a larger span than many other bridge types. This makes it particularly suitable for crossing rivers, valleys, and other complex terrain, and can reduce the number of piers, saving construction costs and reducing the impact on the ecological environment.
Light Weight and Easy Transportation: Compared with concrete bridges, steel truss bridges have lighter self-weight. The components are standardized and modular, which is convenient for transportation by sea, land, and air. Even in remote areas with inconvenient transportation, the components can be easily transported to the construction site, which greatly improves the applicability of the product.
Short Construction Period: The production of steel truss bridge components can be carried out in the factory at the same time as the on-site foundation construction, realizing parallel operation. After the components are transported to the site, they can be assembled quickly with professional installation equipment and technology. Generally speaking, the construction period of steel truss bridges is 30%-50% shorter than that of concrete bridges of the same scale, which can make the bridge open to traffic earlier and realize the investment return faster.
Good Recyclability and Environmental Friendliness: Steel is a recyclable material. At the end of the service life of the steel truss bridge, most of the steel components can be recycled and reused, which reduces the generation of construction waste and is in line with the global concept of green and low-carbon development. In addition, the impact of steel truss bridge construction on the surrounding environment is small, with less noise, dust, and sewage discharge.
Due to their unique advantages such as strong spanning capacity, light weight, short construction period, and good durability, steel truss bridges are widely used in various fields of transportation infrastructure and special engineering projects. The main application fields are as follows:
In highway construction, steel truss bridges are often used in sections that need to cross rivers, lakes, valleys, and other obstacles. For example, in the construction of intercity highways and expressways, steel truss bridges can be used as long-span bridges to ensure the smoothness of the highway. In addition, in areas with complex geological conditions (such as soft soil foundations, earthquake-prone areas), the light weight of steel truss bridges can reduce the load on the foundation, improving the stability and safety of the bridge. For example, in some mountainous areas in southwest China, many highway steel truss bridges have been built to connect mountainous areas and plains, promoting the economic development of the region.
Railway transportation has high requirements for the stability and load-bearing capacity of bridges. Steel truss bridges, with their excellent structural performance, are widely used in railway bridges, especially in high-speed railway bridges and heavy-haul railway bridges. The steel truss structure can effectively resist the dynamic load generated by the operation of trains, ensuring the smoothness and safety of train operation. In addition, the large spanning capacity of steel truss bridges can meet the needs of railway lines crossing large rivers and bays. For example, the Wuhan Tianxingzhou Yangtze River Bridge in China is a highway-railway dual-purpose steel truss bridge, which undertakes the transportation tasks of high-speed railways and highways, and is an important part of the national transportation network.
In urban areas, due to the dense population, complex traffic conditions, and limited construction space, steel truss bridges have obvious advantages in urban overpasses, viaducts, and pedestrian bridges. The small footprint of steel truss bridges, short construction period, and little impact on the surrounding environment make them suitable for urban construction. For example, many pedestrian steel truss bridges in large cities can solve the problem of pedestrian crossing roads safely, and at the same time, their beautiful appearance can also become a part of urban landscape. In addition, some urban viaducts adopt steel truss structures to improve the traffic capacity of the city and alleviate traffic congestion.
In rural and remote areas, the economic level is relatively low, the transportation is inconvenient, and the demand for bridge construction is urgent. Steel truss bridges, with their low cost, easy transportation, and quick assembly, are an ideal choice for bridge construction in these areas. They can connect villages, towns, and rural roads, solving the problem of "difficulty in crossing rivers" for local residents and promoting the development of rural economy and agriculture. For example, in many African countries and Southeast Asian countries, a large number of small and medium-span steel truss bridges have been built in rural areas, greatly improving the local transportation conditions.
Steel truss bridges are also widely used in various special engineering projects, such as temporary bridges for construction, military bridges, and bridges in harsh environments (such as cold regions, high-altitude regions, and coastal corrosion-prone regions). Temporary steel truss bridges can be quickly erected to meet the needs of construction site transportation, and can be disassembled and reused after the project is completed. Military steel truss bridges have the characteristics of quick assembly and disassembly, strong mobility, and can meet the needs of military operations. In harsh environments, steel truss bridges after special anti-corrosion and anti-freezing treatment can maintain good performance and ensure the smoothness of transportation.
Bridge design standards are the technical basis for ensuring the safety, reliability, and applicability of bridges. Different countries and regions have formulated their own bridge design standards according to their own geographical environment, climate conditions, economic level, and technical level. For steel truss bridge manufacturers and suppliers engaged in international trade, it is crucial to be familiar with and master various mainstream international bridge design standards. The following will list and compare several important international bridge design standards, focusing on the application of BS5400 in Sri Lanka.
1. BS5400 (British Standard): British Standard for Steel, Concrete and Composite Bridges, which is one of the earliest and most influential bridge design standards in the world. It covers the design, construction, inspection, and maintenance of steel bridges, concrete bridges, and composite bridges.
2. AASHTO (American Association of State Highway and Transportation Officials): American Standard for Highway Bridges, which is widely used in the United States and many countries in North America, South America, and Southeast Asia. It has detailed regulations on the design, construction, and load criteria of highway bridges.
3. Eurocode 3 (European Standard): European Standard for Design of Steel Structures, which is part of the European unified standard. It specifies the design principles and technical requirements of steel structures, including steel truss bridges. It is applicable to all member states of the European Union and some non-European countries.
4. JIS (Japanese Industrial Standard): Japanese Industrial Standard for Bridges, which is formulated according to Japan's geographical environment (such as frequent earthquakes) and transportation needs. It has strict requirements on the seismic performance and durability of bridges.
5. GB (Chinese National Standard): Chinese National Standard for Bridges, such as GB 50017-2017 "Code for Design of Steel Structures" and GB 50205-2020 "Code for Construction and Acceptance of Steel Structures". With the development of China's infrastructure construction, GB standards are also gradually recognized and applied in the international market.
The following will compare the main aspects of the above several international bridge design standards, including design philosophy, load criteria, material requirements, and seismic design, to help readers understand their differences and characteristics.
4.2.1 Design Philosophy
BS5400: Adopts the allowable stress design method, focusing on ensuring the safety of the structure under normal working conditions. It pays attention to the experience and practical engineering data, and has detailed regulations on the construction and maintenance of the structure.
AASHTO: Adopts the load and resistance factor design (LRFD) method, which comprehensively considers the uncertainty of load and the variability of material performance, and uses probability theory to calculate the safety factor. It focuses on the reliability and durability of the structure during the whole life cycle.
Eurocode 3: Adopts the limit state design method, which divides the structure's working state into two types: ultimate limit state and serviceability limit state. It pays attention to the rational use of materials and the optimization of the structure, and emphasizes the sustainability and environmental protection of the structure.
JIS: Adopts the allowable stress design method and the limit state design method simultaneously, and has strict requirements on the seismic performance of the structure. It pays attention to the adaptability of the structure to the local geographical environment and climate conditions.
GB: Adopts the limit state design method, which is similar to Eurocode 3. It combines China's engineering practice and geographical characteristics, and has detailed regulations on the design and construction of bridges in different regions (such as seismic fortification zones, cold regions).
4.2.2 Load Criteria
BS5400: The load standards include permanent load (self-weight, etc.), variable load (vehicle load, pedestrian load, wind load, etc.), and accidental load (earthquake load, collision load, etc.). The vehicle load standard is relatively conservative, and the wind load calculation considers the influence of the terrain and the height of the bridge.
AASHTO: The load standards are detailed, including the design vehicle load (HL-93 load), pedestrian load, wind load, earthquake load, temperature load, etc. The HL-93 load is a typical vehicle load standard in the United States, which is suitable for highway bridges of different grades. The wind load calculation adopts the wind tunnel test data and has a complete set of wind load calculation methods.
Eurocode 3: The load standards are unified in the European Union, including permanent load, variable load, accidental load, etc. The vehicle load adopts the standard load model of the European Union, which is suitable for highway and railway bridges in different countries. The wind load calculation considers the regional wind speed characteristics and the aerodynamic effect of the structure.
JIS: The load standards include permanent load, variable load, earthquake load, etc. The earthquake load standard is very strict, considering the frequency and intensity of earthquakes in Japan. The vehicle load standard is formulated according to the actual situation of Japanese highways and railways.
GB: The load standards include permanent load, variable load, accidental load, etc. The vehicle load adopts the standard vehicle load for Chinese highways and railways (such as highway I-level load, railway standard load). The earthquake load standard divides the seismic fortification intensity into different levels according to China's seismic zoning, and has corresponding design requirements for bridges in different seismic fortification zones.
4.2.3 Material Requirements
BS5400: The requirements for steel materials are detailed, including the chemical composition, mechanical properties, and welding performance of steel. It allows the use of various types of steel, such as carbon steel, low-alloy steel, and high-strength steel. The quality of welding materials and welding seams is strictly regulated.
AASHTO: The requirements for steel materials are in line with the American ASTM standards, and have clear regulations on the strength, toughness, and corrosion resistance of steel. For steel used in bridges in harsh environments (such as coastal areas), additional corrosion resistance requirements are put forward.
Eurocode 3: The requirements for steel materials are unified, and the steel grades and performance indicators are clearly specified. It pays attention to the weldability and formability of steel, and encourages the use of high-strength steel to reduce the self-weight of the structure.
JIS: The requirements for steel materials are in line with Japanese JIS standards, and have strict requirements on the seismic performance and fatigue resistance of steel. The steel used in bridges must pass strict quality inspection and certification.
GB: The requirements for steel materials are in line with Chinese GB standards, and the steel grades and performance indicators are clearly specified. For steel used in different environments and projects, corresponding quality requirements are put forward. For example, the steel used in coastal bridges must have good corrosion resistance.
Sri Lanka, as a country with a long history of British colonial rule, has been deeply influenced by British engineering technology and standards. In the field of bridge design and construction, BS5400 has been widely used and recognized, and has become one of the main design standards for local bridge projects. The reasons for the wide application of BS5400 in Sri Lanka and its specific application in practical projects are as follows:
4.3.1 Historical and Institutional Reasons
Sri Lanka was a British colony from 1815 to 1948. During the colonial period, the British government carried out a large number of infrastructure construction in Sri Lanka, including roads, railways, and bridges. These projects were all designed and constructed in accordance with British standards (including BS5400). After Sri Lanka's independence, in order to maintain the continuity and stability of infrastructure construction, it continued to adopt British standards in the field of bridge design and construction. At the same time, the local engineering and technical personnel, construction enterprises, and regulatory authorities are more familiar with BS5400, which has laid a solid foundation for the wide application of BS5400 in Sri Lanka.
4.3.2 Adaptability to Local Conditions
Sri Lanka is located in South Asia, with a tropical monsoon climate, high temperature, high humidity, and abundant rainfall. At the same time, the country has complex terrain, with many rivers, valleys, and coastal areas. BS5400 has good adaptability to these local conditions. For example, BS5400 has detailed regulations on the corrosion resistance of steel structures, which is very important for bridges in Sri Lanka's high-humidity and coastal corrosion-prone environments. In addition, BS5400's requirements for the load-bearing capacity and stability of bridges are also in line with the needs of Sri Lanka's transportation. The local highway and railway transportation volume is relatively moderate, and the load standard of BS5400 can fully meet the use requirements.
4.3.3 Application in Practical Projects
In Sri Lanka's bridge construction projects in recent years, many have adopted BS5400 as the design standard. For example, the renovation project of the Colombo-Katunayake Expressway Bridge, the construction project of the Kelani River Bridge in Colombo, and the rural bridge construction projects in various regions have all strictly followed the design requirements of BS5400. These projects have achieved good results in terms of safety, reliability, and durability. Taking the Kelani River Bridge as an example, the bridge is a steel truss bridge designed in accordance with BS5400. It has a large spanning capacity, which can meet the needs of crossing the Kelani River. At the same time, the anti-corrosion treatment of the steel structure in accordance with BS5400 ensures that the bridge can maintain good performance in the high-humidity environment of Sri Lanka.
In addition, the Sri Lankan government and regulatory authorities also require that bridge projects funded by international organizations (such as the World Bank and the Asian Development Bank) must comply with internationally recognized design standards, and BS5400, as a mature and authoritative international standard, is often the first choice for these projects. This also further promotes the application and popularization of BS5400 in Sri Lanka.
Sri Lanka, as an important country in South Asia, has a growing demand for infrastructure construction in recent years, especially for bridges. Steel truss bridges, with their unique advantages, have broad market prospects in Sri Lanka. The following will analyze the demand for steel truss bridges in Sri Lanka from multiple dimensions, including international trade, geographical environment, and climate conditions.
Sri Lanka is located at the important hub of the Indian Ocean shipping route, with obvious geographical advantages in international trade. In recent years, the Sri Lankan government has vigorously promoted economic development, focusing on developing industries such as shipping, logistics, tourism, and agriculture. These industries have put forward higher requirements for the transportation infrastructure of the country, especially for bridges that connect various regions and ports.
On the one hand, the development of international trade requires efficient and smooth land transportation networks to connect ports with inland areas. Sri Lanka has many important ports, such as Colombo Port, Hambantota Port, and Galle Port. The roads connecting these ports with inland industrial zones and cities need a large number of bridges to cross rivers and valleys. Steel truss bridges, with their large spanning capacity, short construction period, and low cost, are an ideal choice for these bridge projects. For example, the construction of steel truss bridges on the highway from Colombo Port to the inland industrial zone can improve the transportation efficiency of goods, reduce transportation costs, and promote the development of international trade.
On the other hand, the development of tourism in Sri Lanka also requires the improvement of transportation infrastructure. Sri Lanka has rich tourism resources, such as beaches, ancient cities, and natural scenic spots, which are distributed in various regions of the country. The roads connecting these scenic spots need to cross various complex terrains, and bridges are an important part of them. Steel truss bridges, with their beautiful appearance and good adaptability to the natural environment, can not only meet the transportation needs but also not damage the natural landscape, which is very suitable for the construction of bridges in tourist areas.
Sri Lanka's geographical environment is complex, which determines the strong demand for steel truss bridges. The country is an island country with a land area of about 65,610 square kilometers. The terrain is high in the middle and low around, with many mountains, plateaus, rivers, and valleys. The main rivers include the Mahaweli River, Kelani River, and Kalu River, which crisscross the country and divide the land into many parts. This geographical environment makes bridge construction an important part of Sri Lanka's transportation infrastructure construction.
First of all, the large number of rivers and valleys in Sri Lanka require a large number of bridges to connect the two banks. Steel truss bridges have large spanning capacity, which can cross rivers and valleys without building too many piers, reducing the impact on the river ecosystem and saving construction costs. For example, in the middle and upper reaches of the Mahaweli River, the river valley is deep and the terrain is steep. Building steel truss bridges here can effectively solve the problem of crossing the river and connect the mountainous areas on both sides.
Secondly, Sri Lanka has many coastal areas, and the construction of coastal bridges also has a high demand for steel truss bridges. Coastal areas are often affected by typhoons, storm surges, and other natural disasters, and the corrosion of seawater is also very serious. Steel truss bridges, after professional anti-corrosion treatment (such as galvanizing and painting), have good corrosion resistance and can withstand the erosion of seawater and the impact of natural disasters. For example, the construction of steel truss bridges in coastal cities such as Colombo and Galle can improve the coastal transportation capacity and enhance the disaster resistance of the transportation network.
Sri Lanka has a tropical monsoon climate, with high temperature, high humidity, abundant rainfall, and frequent natural disasters such as typhoons and floods. This climate environment puts forward strict requirements on the performance of bridges, and steel truss bridges have obvious advantages in adapting to this climate environment.
First of all, the high temperature and high humidity environment in Sri Lanka is easy to cause corrosion of building materials. Steel truss bridges, after professional anti-corrosion treatment, can effectively resist the corrosion of high humidity and rainwater. For example, the hot-dip galvanizing treatment can form a dense zinc layer on the surface of the steel, which can isolate the steel from the air and water, preventing corrosion. In addition, the use of anti-corrosion paint can further enhance the corrosion resistance of the steel truss bridge, ensuring its service life in the tropical monsoon climate.
Secondly, Sri Lanka has abundant rainfall, especially during the monsoon season (May-July and October-December), which often causes floods. Floods will have a strong impact on bridges, requiring bridges to have sufficient strength and stability. Steel truss bridges have good structural strength and rigidity, which can withstand the impact of floods. At the same time, the light weight of steel truss bridges reduces the load on the foundation, which can avoid the damage of the foundation caused by flood scouring to a certain extent.
Finally, Sri Lanka is often affected by typhoons. Typhoons will generate strong wind loads, which will have a great impact on the safety of bridges. Steel truss bridges have good aerodynamic performance, and the truss structure can reduce the wind resistance. At the same time, the design of steel truss bridges in accordance with international standards (such as BS5400) fully considers the wind load, ensuring that the bridge can withstand the impact of typhoons and maintain structural stability.
The Sri Lankan government attaches great importance to infrastructure construction and has formulated a series of policies and plans to promote the development of transportation infrastructure. For example, the "National Transport Policy" formulated by the Sri Lankan government proposes to improve the country's transportation network, strengthen the construction of roads and bridges, and promote the balanced development of regional economies. These policies and plans provide a strong policy support for the demand for steel truss bridges in Sri Lanka.
In addition, with the recovery and development of Sri Lanka's economy, the government's investment in infrastructure construction is increasing year by year. According to the data released by the Sri Lankan Ministry of Finance, the government's investment in transportation infrastructure in 2023 accounted for about 15% of the total government investment. This investment will be mainly used for the construction and renovation of roads and bridges, which will directly drive the demand for steel truss bridges.
In order to help customers better understand our products and services, we have sorted out some common questions and answered them in detail below:
A1: Yes, we provide professional installation services for steel truss bridges. We have a professional installation team with rich experience in bridge installation. The team members have professional certification and are familiar with the installation process and technical requirements of steel truss bridges. Before installation, our technical team will formulate a detailed installation plan according to the specific conditions of the project site (such as terrain, climate, and transportation conditions) and the design requirements of the product. During the installation process, our team will strictly follow the installation plan and relevant international standards to ensure the safety and quality of the installation. After the installation is completed, we will carry out a comprehensive inspection and acceptance of the bridge to ensure that it meets the use requirements. In addition, we can also provide installation guidance services according to the customer's needs, sending professional technical personnel to the site to guide the customer's team to carry out the installation work.
A2: Yes, we provide comprehensive technical support for steel truss bridge projects throughout the whole process. Before the project starts, our professional technical team will communicate with the customer in detail to understand the customer's needs (such as the use function of the bridge, the span length, the load requirement, and the local design standards) and provide personalized design solutions for the customer. We will carry out detailed structural design, load calculation, and seismic design according to the specific conditions of the project, ensuring that the product meets the customer's needs and local technical requirements.
In addition, we can also carry out parallel operation of production and transportation. While the products are being produced in the factory, we can start to arrange the transportation plan and prepare the relevant documents (such as commercial invoice, packing list, certificate of origin, and quality inspection report) to shorten the overall delivery cycle. We are committed to delivering the products to the customer on time to ensure the smooth progress of the customer's project.
Steel truss bridges, with their unique structural advantages, reliable performance, and wide adaptability, play an important role in global transportation infrastructure construction. As a professional integrated industrial and trade enterprise, EVERCROSS BRIDGE TECHNOLOGY (SHANGHAI) CO., LTD. is committed to providing high-quality and cost-effective steel truss bridge solutions that comply with various international standards. Our products have obvious advantages in quality, price, and compliance with international standards, and can meet the needs of different markets.
Sri Lanka, with its unique international trade location, complex geographical environment, and tropical monsoon climate, has a strong demand for steel truss bridges. BS5400, as a widely used bridge design standard in Sri Lanka, is also the focus of our product design and manufacturing. We can provide customized steel truss bridge solutions for Sri Lankan customers, as well as comprehensive services such as installation, technical support, and after-sales service.
We look forward to cooperating with customers in Sri Lanka and around the world to contribute to the construction of transportation infrastructure and promote economic and social development. If you have any needs or questions about steel truss bridges, please feel free to contact us.
In the field of transportation infrastructure construction, bridges serve as vital links connecting regions, promoting economic and social development. Among the diverse types of bridges, steel truss bridges have long occupied a prominent position in global infrastructure projects due to their unique structural advantages, reliable performance, and wide adaptability. As a professional integrated industrial and trade enterprise specializing in the production and sales of steel truss bridges, EVERCROSS BRIDGE TECHNOLOGY (SHANGHAI) CO., LTD. is committed to providing high-quality and cost-effective steel truss bridge solutions that comply with various international bridge design standards. We will comprehensively explore the definition of steel truss bridges, their advantages, characteristics, application fields, mainstream international bridge design standards, the application of BS5400 in Sri Lanka, and the multi-dimensional demand for steel truss bridges in Sri Lanka. Finally, we will answer key questions about installation, technical support, and after-sales services to help global partners, especially those in Sri Lanka, gain a comprehensive understanding of our products and services.
A steel truss bridge is a type of bridge whose main load-bearing structure consists of a truss composed of steel members connected by nodes. The truss, as the core component, is formed by arranging and combining steel rods (such as angle steel, channel steel, I-steel, and steel pipes) in a specific geometric pattern (common forms include triangular truss, quadrangular truss, and polygonal truss). The nodes, which are the connection points of the truss members, can be rigidly connected or hinged, ensuring that the force is evenly transmitted between the members.
The basic working principle of a steel truss bridge is to convert the vertical load (such as vehicle weight, pedestrian weight, and self-weight) and horizontal load (such as wind load, earthquake load) acting on the bridge deck into axial tension or compression forces on the truss members. Compared with other bridge types (such as concrete bridges, arch bridges), the steel truss structure effectively reduces the self-weight of the bridge while ensuring the structural strength, making it have obvious advantages in spanning capacity. In addition, the steel truss bridge has the characteristics of standardized component production, convenient transportation, and quick on-site assembly, which can greatly shorten the construction period and reduce the impact of construction on the surrounding environment and transportation.
According to different classification standards, steel truss bridges can be divided into various types. For example, according to the location of the truss, they can be divided into through truss bridges (the truss is above the bridge deck), deck truss bridges (the truss is below the bridge deck), and half-through truss bridges (the truss is between the upper and lower bridge decks); according to the span length, they can be divided into small-span steel truss bridges (span less than 50 meters), medium-span steel truss bridges (span 50-150 meters), and large-span steel truss bridges (span more than 150 meters); according to the use function, they can be divided into highway steel truss bridges, railway steel truss bridges, and highway-railway dual-purpose steel truss bridges.
As a professional manufacturer and supplier of steel truss bridges, EVERCROSS BRIDGE TECHNOLOGY (SHANGHAI) CO., LTD. has always adhered to the core concepts of "quality first" and "customer-oriented", and our steel truss bridge products have obvious advantages in quality, price, and compliance with international standards. The specific advantages and characteristics are as follows:
The quality of steel truss bridges is directly related to the safety and service life of transportation infrastructure. We strictly control the quality of raw materials, selecting high-quality carbon structural steel, low-alloy high-strength steel, and other materials that meet international standards (such as GB/T 700, ASTM A36, EN 10025). Before entering the production process, all raw materials must undergo strict quality inspection, including chemical composition analysis, mechanical property testing, and surface quality inspection, to ensure that they meet the design requirements.
In the manufacturing process, we adopt advanced production equipment and precision processing technology. The steel members are processed by numerical control cutting, automatic welding, and precision grinding, which ensures the dimensional accuracy and welding quality of the members. Our welding operators have professional certification (such as AWS D1.1, ISO 9606), and the welding seams are subject to non-destructive testing (such as ultrasonic testing, X-ray testing) to ensure that there are no defects such as cracks and porosity. In addition, we have established a complete quality management system, passing ISO 9001 quality management system certification, to monitor the entire production process from raw material procurement to product delivery, ensuring that each steel truss bridge product meets the highest quality standards.
As an integrated industrial and trade enterprise, we have our own production base, which realizes the integration of raw material procurement, product manufacturing, and sales. This integrated model effectively reduces intermediate links and transaction costs, enabling us to provide customers with high-quality products at competitive prices. Compared with similar products in the international market, our steel truss bridges have obvious price advantages under the premise of ensuring the same quality level.
In addition to the competitive initial purchase price, our steel truss bridges also have the advantage of low overall cost during the whole life cycle. On the one hand, the steel structure has good durability and corrosion resistance (after professional anti-corrosion treatment such as galvanizing and painting), which reduces the frequency of maintenance and repair and the corresponding maintenance costs. On the other hand, the standardized design and modular production of our products enable quick on-site assembly, reducing construction time and labor costs. At the same time, the light weight of the steel truss bridge reduces the requirements for the bridge foundation, which can also save the cost of foundation construction in some cases.
We fully understand that different countries and regions have different requirements for bridge design and construction. Therefore, our steel truss bridge products are designed and manufactured in strict accordance with various mainstream international bridge design standards, including BS5400 (British Standard), AASHTO (American Association of State Highway and Transportation Officials), Eurocode 3 (European Standard), JIS (Japanese Industrial Standard), and GB (Chinese National Standard). This ensures that our products can meet the technical requirements of different markets and smoothly pass the local quality inspection and acceptance.
Our professional technical team has in-depth research and rich experience in international bridge design standards. They can carry out personalized design according to the specific requirements of customers and the local standards of the project location, ensuring that the product is perfectly adapted to the local construction environment and use needs. Whether it is a highway bridge, railway bridge, or a special-purpose bridge in a harsh environment, we can provide corresponding solutions that comply with international standards.
Strong Spanning Capacity: The truss structure of the steel truss bridge has excellent force-bearing performance, which can achieve a larger span than many other bridge types. This makes it particularly suitable for crossing rivers, valleys, and other complex terrain, and can reduce the number of piers, saving construction costs and reducing the impact on the ecological environment.
Light Weight and Easy Transportation: Compared with concrete bridges, steel truss bridges have lighter self-weight. The components are standardized and modular, which is convenient for transportation by sea, land, and air. Even in remote areas with inconvenient transportation, the components can be easily transported to the construction site, which greatly improves the applicability of the product.
Short Construction Period: The production of steel truss bridge components can be carried out in the factory at the same time as the on-site foundation construction, realizing parallel operation. After the components are transported to the site, they can be assembled quickly with professional installation equipment and technology. Generally speaking, the construction period of steel truss bridges is 30%-50% shorter than that of concrete bridges of the same scale, which can make the bridge open to traffic earlier and realize the investment return faster.
Good Recyclability and Environmental Friendliness: Steel is a recyclable material. At the end of the service life of the steel truss bridge, most of the steel components can be recycled and reused, which reduces the generation of construction waste and is in line with the global concept of green and low-carbon development. In addition, the impact of steel truss bridge construction on the surrounding environment is small, with less noise, dust, and sewage discharge.
Due to their unique advantages such as strong spanning capacity, light weight, short construction period, and good durability, steel truss bridges are widely used in various fields of transportation infrastructure and special engineering projects. The main application fields are as follows:
In highway construction, steel truss bridges are often used in sections that need to cross rivers, lakes, valleys, and other obstacles. For example, in the construction of intercity highways and expressways, steel truss bridges can be used as long-span bridges to ensure the smoothness of the highway. In addition, in areas with complex geological conditions (such as soft soil foundations, earthquake-prone areas), the light weight of steel truss bridges can reduce the load on the foundation, improving the stability and safety of the bridge. For example, in some mountainous areas in southwest China, many highway steel truss bridges have been built to connect mountainous areas and plains, promoting the economic development of the region.
Railway transportation has high requirements for the stability and load-bearing capacity of bridges. Steel truss bridges, with their excellent structural performance, are widely used in railway bridges, especially in high-speed railway bridges and heavy-haul railway bridges. The steel truss structure can effectively resist the dynamic load generated by the operation of trains, ensuring the smoothness and safety of train operation. In addition, the large spanning capacity of steel truss bridges can meet the needs of railway lines crossing large rivers and bays. For example, the Wuhan Tianxingzhou Yangtze River Bridge in China is a highway-railway dual-purpose steel truss bridge, which undertakes the transportation tasks of high-speed railways and highways, and is an important part of the national transportation network.
In urban areas, due to the dense population, complex traffic conditions, and limited construction space, steel truss bridges have obvious advantages in urban overpasses, viaducts, and pedestrian bridges. The small footprint of steel truss bridges, short construction period, and little impact on the surrounding environment make them suitable for urban construction. For example, many pedestrian steel truss bridges in large cities can solve the problem of pedestrian crossing roads safely, and at the same time, their beautiful appearance can also become a part of urban landscape. In addition, some urban viaducts adopt steel truss structures to improve the traffic capacity of the city and alleviate traffic congestion.
In rural and remote areas, the economic level is relatively low, the transportation is inconvenient, and the demand for bridge construction is urgent. Steel truss bridges, with their low cost, easy transportation, and quick assembly, are an ideal choice for bridge construction in these areas. They can connect villages, towns, and rural roads, solving the problem of "difficulty in crossing rivers" for local residents and promoting the development of rural economy and agriculture. For example, in many African countries and Southeast Asian countries, a large number of small and medium-span steel truss bridges have been built in rural areas, greatly improving the local transportation conditions.
Steel truss bridges are also widely used in various special engineering projects, such as temporary bridges for construction, military bridges, and bridges in harsh environments (such as cold regions, high-altitude regions, and coastal corrosion-prone regions). Temporary steel truss bridges can be quickly erected to meet the needs of construction site transportation, and can be disassembled and reused after the project is completed. Military steel truss bridges have the characteristics of quick assembly and disassembly, strong mobility, and can meet the needs of military operations. In harsh environments, steel truss bridges after special anti-corrosion and anti-freezing treatment can maintain good performance and ensure the smoothness of transportation.
Bridge design standards are the technical basis for ensuring the safety, reliability, and applicability of bridges. Different countries and regions have formulated their own bridge design standards according to their own geographical environment, climate conditions, economic level, and technical level. For steel truss bridge manufacturers and suppliers engaged in international trade, it is crucial to be familiar with and master various mainstream international bridge design standards. The following will list and compare several important international bridge design standards, focusing on the application of BS5400 in Sri Lanka.
1. BS5400 (British Standard): British Standard for Steel, Concrete and Composite Bridges, which is one of the earliest and most influential bridge design standards in the world. It covers the design, construction, inspection, and maintenance of steel bridges, concrete bridges, and composite bridges.
2. AASHTO (American Association of State Highway and Transportation Officials): American Standard for Highway Bridges, which is widely used in the United States and many countries in North America, South America, and Southeast Asia. It has detailed regulations on the design, construction, and load criteria of highway bridges.
3. Eurocode 3 (European Standard): European Standard for Design of Steel Structures, which is part of the European unified standard. It specifies the design principles and technical requirements of steel structures, including steel truss bridges. It is applicable to all member states of the European Union and some non-European countries.
4. JIS (Japanese Industrial Standard): Japanese Industrial Standard for Bridges, which is formulated according to Japan's geographical environment (such as frequent earthquakes) and transportation needs. It has strict requirements on the seismic performance and durability of bridges.
5. GB (Chinese National Standard): Chinese National Standard for Bridges, such as GB 50017-2017 "Code for Design of Steel Structures" and GB 50205-2020 "Code for Construction and Acceptance of Steel Structures". With the development of China's infrastructure construction, GB standards are also gradually recognized and applied in the international market.
The following will compare the main aspects of the above several international bridge design standards, including design philosophy, load criteria, material requirements, and seismic design, to help readers understand their differences and characteristics.
4.2.1 Design Philosophy
BS5400: Adopts the allowable stress design method, focusing on ensuring the safety of the structure under normal working conditions. It pays attention to the experience and practical engineering data, and has detailed regulations on the construction and maintenance of the structure.
AASHTO: Adopts the load and resistance factor design (LRFD) method, which comprehensively considers the uncertainty of load and the variability of material performance, and uses probability theory to calculate the safety factor. It focuses on the reliability and durability of the structure during the whole life cycle.
Eurocode 3: Adopts the limit state design method, which divides the structure's working state into two types: ultimate limit state and serviceability limit state. It pays attention to the rational use of materials and the optimization of the structure, and emphasizes the sustainability and environmental protection of the structure.
JIS: Adopts the allowable stress design method and the limit state design method simultaneously, and has strict requirements on the seismic performance of the structure. It pays attention to the adaptability of the structure to the local geographical environment and climate conditions.
GB: Adopts the limit state design method, which is similar to Eurocode 3. It combines China's engineering practice and geographical characteristics, and has detailed regulations on the design and construction of bridges in different regions (such as seismic fortification zones, cold regions).
4.2.2 Load Criteria
BS5400: The load standards include permanent load (self-weight, etc.), variable load (vehicle load, pedestrian load, wind load, etc.), and accidental load (earthquake load, collision load, etc.). The vehicle load standard is relatively conservative, and the wind load calculation considers the influence of the terrain and the height of the bridge.
AASHTO: The load standards are detailed, including the design vehicle load (HL-93 load), pedestrian load, wind load, earthquake load, temperature load, etc. The HL-93 load is a typical vehicle load standard in the United States, which is suitable for highway bridges of different grades. The wind load calculation adopts the wind tunnel test data and has a complete set of wind load calculation methods.
Eurocode 3: The load standards are unified in the European Union, including permanent load, variable load, accidental load, etc. The vehicle load adopts the standard load model of the European Union, which is suitable for highway and railway bridges in different countries. The wind load calculation considers the regional wind speed characteristics and the aerodynamic effect of the structure.
JIS: The load standards include permanent load, variable load, earthquake load, etc. The earthquake load standard is very strict, considering the frequency and intensity of earthquakes in Japan. The vehicle load standard is formulated according to the actual situation of Japanese highways and railways.
GB: The load standards include permanent load, variable load, accidental load, etc. The vehicle load adopts the standard vehicle load for Chinese highways and railways (such as highway I-level load, railway standard load). The earthquake load standard divides the seismic fortification intensity into different levels according to China's seismic zoning, and has corresponding design requirements for bridges in different seismic fortification zones.
4.2.3 Material Requirements
BS5400: The requirements for steel materials are detailed, including the chemical composition, mechanical properties, and welding performance of steel. It allows the use of various types of steel, such as carbon steel, low-alloy steel, and high-strength steel. The quality of welding materials and welding seams is strictly regulated.
AASHTO: The requirements for steel materials are in line with the American ASTM standards, and have clear regulations on the strength, toughness, and corrosion resistance of steel. For steel used in bridges in harsh environments (such as coastal areas), additional corrosion resistance requirements are put forward.
Eurocode 3: The requirements for steel materials are unified, and the steel grades and performance indicators are clearly specified. It pays attention to the weldability and formability of steel, and encourages the use of high-strength steel to reduce the self-weight of the structure.
JIS: The requirements for steel materials are in line with Japanese JIS standards, and have strict requirements on the seismic performance and fatigue resistance of steel. The steel used in bridges must pass strict quality inspection and certification.
GB: The requirements for steel materials are in line with Chinese GB standards, and the steel grades and performance indicators are clearly specified. For steel used in different environments and projects, corresponding quality requirements are put forward. For example, the steel used in coastal bridges must have good corrosion resistance.
Sri Lanka, as a country with a long history of British colonial rule, has been deeply influenced by British engineering technology and standards. In the field of bridge design and construction, BS5400 has been widely used and recognized, and has become one of the main design standards for local bridge projects. The reasons for the wide application of BS5400 in Sri Lanka and its specific application in practical projects are as follows:
4.3.1 Historical and Institutional Reasons
Sri Lanka was a British colony from 1815 to 1948. During the colonial period, the British government carried out a large number of infrastructure construction in Sri Lanka, including roads, railways, and bridges. These projects were all designed and constructed in accordance with British standards (including BS5400). After Sri Lanka's independence, in order to maintain the continuity and stability of infrastructure construction, it continued to adopt British standards in the field of bridge design and construction. At the same time, the local engineering and technical personnel, construction enterprises, and regulatory authorities are more familiar with BS5400, which has laid a solid foundation for the wide application of BS5400 in Sri Lanka.
4.3.2 Adaptability to Local Conditions
Sri Lanka is located in South Asia, with a tropical monsoon climate, high temperature, high humidity, and abundant rainfall. At the same time, the country has complex terrain, with many rivers, valleys, and coastal areas. BS5400 has good adaptability to these local conditions. For example, BS5400 has detailed regulations on the corrosion resistance of steel structures, which is very important for bridges in Sri Lanka's high-humidity and coastal corrosion-prone environments. In addition, BS5400's requirements for the load-bearing capacity and stability of bridges are also in line with the needs of Sri Lanka's transportation. The local highway and railway transportation volume is relatively moderate, and the load standard of BS5400 can fully meet the use requirements.
4.3.3 Application in Practical Projects
In Sri Lanka's bridge construction projects in recent years, many have adopted BS5400 as the design standard. For example, the renovation project of the Colombo-Katunayake Expressway Bridge, the construction project of the Kelani River Bridge in Colombo, and the rural bridge construction projects in various regions have all strictly followed the design requirements of BS5400. These projects have achieved good results in terms of safety, reliability, and durability. Taking the Kelani River Bridge as an example, the bridge is a steel truss bridge designed in accordance with BS5400. It has a large spanning capacity, which can meet the needs of crossing the Kelani River. At the same time, the anti-corrosion treatment of the steel structure in accordance with BS5400 ensures that the bridge can maintain good performance in the high-humidity environment of Sri Lanka.
In addition, the Sri Lankan government and regulatory authorities also require that bridge projects funded by international organizations (such as the World Bank and the Asian Development Bank) must comply with internationally recognized design standards, and BS5400, as a mature and authoritative international standard, is often the first choice for these projects. This also further promotes the application and popularization of BS5400 in Sri Lanka.
Sri Lanka, as an important country in South Asia, has a growing demand for infrastructure construction in recent years, especially for bridges. Steel truss bridges, with their unique advantages, have broad market prospects in Sri Lanka. The following will analyze the demand for steel truss bridges in Sri Lanka from multiple dimensions, including international trade, geographical environment, and climate conditions.
Sri Lanka is located at the important hub of the Indian Ocean shipping route, with obvious geographical advantages in international trade. In recent years, the Sri Lankan government has vigorously promoted economic development, focusing on developing industries such as shipping, logistics, tourism, and agriculture. These industries have put forward higher requirements for the transportation infrastructure of the country, especially for bridges that connect various regions and ports.
On the one hand, the development of international trade requires efficient and smooth land transportation networks to connect ports with inland areas. Sri Lanka has many important ports, such as Colombo Port, Hambantota Port, and Galle Port. The roads connecting these ports with inland industrial zones and cities need a large number of bridges to cross rivers and valleys. Steel truss bridges, with their large spanning capacity, short construction period, and low cost, are an ideal choice for these bridge projects. For example, the construction of steel truss bridges on the highway from Colombo Port to the inland industrial zone can improve the transportation efficiency of goods, reduce transportation costs, and promote the development of international trade.
On the other hand, the development of tourism in Sri Lanka also requires the improvement of transportation infrastructure. Sri Lanka has rich tourism resources, such as beaches, ancient cities, and natural scenic spots, which are distributed in various regions of the country. The roads connecting these scenic spots need to cross various complex terrains, and bridges are an important part of them. Steel truss bridges, with their beautiful appearance and good adaptability to the natural environment, can not only meet the transportation needs but also not damage the natural landscape, which is very suitable for the construction of bridges in tourist areas.
Sri Lanka's geographical environment is complex, which determines the strong demand for steel truss bridges. The country is an island country with a land area of about 65,610 square kilometers. The terrain is high in the middle and low around, with many mountains, plateaus, rivers, and valleys. The main rivers include the Mahaweli River, Kelani River, and Kalu River, which crisscross the country and divide the land into many parts. This geographical environment makes bridge construction an important part of Sri Lanka's transportation infrastructure construction.
First of all, the large number of rivers and valleys in Sri Lanka require a large number of bridges to connect the two banks. Steel truss bridges have large spanning capacity, which can cross rivers and valleys without building too many piers, reducing the impact on the river ecosystem and saving construction costs. For example, in the middle and upper reaches of the Mahaweli River, the river valley is deep and the terrain is steep. Building steel truss bridges here can effectively solve the problem of crossing the river and connect the mountainous areas on both sides.
Secondly, Sri Lanka has many coastal areas, and the construction of coastal bridges also has a high demand for steel truss bridges. Coastal areas are often affected by typhoons, storm surges, and other natural disasters, and the corrosion of seawater is also very serious. Steel truss bridges, after professional anti-corrosion treatment (such as galvanizing and painting), have good corrosion resistance and can withstand the erosion of seawater and the impact of natural disasters. For example, the construction of steel truss bridges in coastal cities such as Colombo and Galle can improve the coastal transportation capacity and enhance the disaster resistance of the transportation network.
Sri Lanka has a tropical monsoon climate, with high temperature, high humidity, abundant rainfall, and frequent natural disasters such as typhoons and floods. This climate environment puts forward strict requirements on the performance of bridges, and steel truss bridges have obvious advantages in adapting to this climate environment.
First of all, the high temperature and high humidity environment in Sri Lanka is easy to cause corrosion of building materials. Steel truss bridges, after professional anti-corrosion treatment, can effectively resist the corrosion of high humidity and rainwater. For example, the hot-dip galvanizing treatment can form a dense zinc layer on the surface of the steel, which can isolate the steel from the air and water, preventing corrosion. In addition, the use of anti-corrosion paint can further enhance the corrosion resistance of the steel truss bridge, ensuring its service life in the tropical monsoon climate.
Secondly, Sri Lanka has abundant rainfall, especially during the monsoon season (May-July and October-December), which often causes floods. Floods will have a strong impact on bridges, requiring bridges to have sufficient strength and stability. Steel truss bridges have good structural strength and rigidity, which can withstand the impact of floods. At the same time, the light weight of steel truss bridges reduces the load on the foundation, which can avoid the damage of the foundation caused by flood scouring to a certain extent.
Finally, Sri Lanka is often affected by typhoons. Typhoons will generate strong wind loads, which will have a great impact on the safety of bridges. Steel truss bridges have good aerodynamic performance, and the truss structure can reduce the wind resistance. At the same time, the design of steel truss bridges in accordance with international standards (such as BS5400) fully considers the wind load, ensuring that the bridge can withstand the impact of typhoons and maintain structural stability.
The Sri Lankan government attaches great importance to infrastructure construction and has formulated a series of policies and plans to promote the development of transportation infrastructure. For example, the "National Transport Policy" formulated by the Sri Lankan government proposes to improve the country's transportation network, strengthen the construction of roads and bridges, and promote the balanced development of regional economies. These policies and plans provide a strong policy support for the demand for steel truss bridges in Sri Lanka.
In addition, with the recovery and development of Sri Lanka's economy, the government's investment in infrastructure construction is increasing year by year. According to the data released by the Sri Lankan Ministry of Finance, the government's investment in transportation infrastructure in 2023 accounted for about 15% of the total government investment. This investment will be mainly used for the construction and renovation of roads and bridges, which will directly drive the demand for steel truss bridges.
In order to help customers better understand our products and services, we have sorted out some common questions and answered them in detail below:
A1: Yes, we provide professional installation services for steel truss bridges. We have a professional installation team with rich experience in bridge installation. The team members have professional certification and are familiar with the installation process and technical requirements of steel truss bridges. Before installation, our technical team will formulate a detailed installation plan according to the specific conditions of the project site (such as terrain, climate, and transportation conditions) and the design requirements of the product. During the installation process, our team will strictly follow the installation plan and relevant international standards to ensure the safety and quality of the installation. After the installation is completed, we will carry out a comprehensive inspection and acceptance of the bridge to ensure that it meets the use requirements. In addition, we can also provide installation guidance services according to the customer's needs, sending professional technical personnel to the site to guide the customer's team to carry out the installation work.
A2: Yes, we provide comprehensive technical support for steel truss bridge projects throughout the whole process. Before the project starts, our professional technical team will communicate with the customer in detail to understand the customer's needs (such as the use function of the bridge, the span length, the load requirement, and the local design standards) and provide personalized design solutions for the customer. We will carry out detailed structural design, load calculation, and seismic design according to the specific conditions of the project, ensuring that the product meets the customer's needs and local technical requirements.
In addition, we can also carry out parallel operation of production and transportation. While the products are being produced in the factory, we can start to arrange the transportation plan and prepare the relevant documents (such as commercial invoice, packing list, certificate of origin, and quality inspection report) to shorten the overall delivery cycle. We are committed to delivering the products to the customer on time to ensure the smooth progress of the customer's project.
Steel truss bridges, with their unique structural advantages, reliable performance, and wide adaptability, play an important role in global transportation infrastructure construction. As a professional integrated industrial and trade enterprise, EVERCROSS BRIDGE TECHNOLOGY (SHANGHAI) CO., LTD. is committed to providing high-quality and cost-effective steel truss bridge solutions that comply with various international standards. Our products have obvious advantages in quality, price, and compliance with international standards, and can meet the needs of different markets.
Sri Lanka, with its unique international trade location, complex geographical environment, and tropical monsoon climate, has a strong demand for steel truss bridges. BS5400, as a widely used bridge design standard in Sri Lanka, is also the focus of our product design and manufacturing. We can provide customized steel truss bridge solutions for Sri Lankan customers, as well as comprehensive services such as installation, technical support, and after-sales service.
We look forward to cooperating with customers in Sri Lanka and around the world to contribute to the construction of transportation infrastructure and promote economic and social development. If you have any needs or questions about steel truss bridges, please feel free to contact us.
