A572 Grade 50 Steel Flat Bar

A572 Grade 50 Steel Flat Bar is a high-strength, low-alloy structural steel designed for demanding construction and industrial applications. With a minimum yield strength of 345 MPa (50 ksi) and excellent tensile strength, it provides superior load-bearing capacity while reducing overall structural weight. This flat bar offers outstanding weldability, formability, and corrosion resistance under normal environmental conditions, making it ideal for bridges, building frameworks, heavy machinery, and structural components. Available in a range of widths, thicknesses, and lengths, it ensures consistent dimensions and reliable mechanical performance. Manufactured under strict quality standards, A572 Grade 50 flat bar delivers durability and long-term stability for critical projects. Contact us today for competitive pricing, custom sizes, and fast delivery.

Key Attributes

Product NameA572 Grade 50 Steel Flat Bar
StandardGB, ASTM, AISI,BS, JIS, DIN, EN
GradeA36,SS400, St37.2, SA283, S235, CK67, CK75, SAE1008, SAE1010, 1.2379, 1.2436, Cr12MoV
Thickness2-300mm (2-100mm usually used)
Width20-600mm
Length1000-12000mm or as your request
SurfaceClean, finishing,blasting and painting according to customer requirement
Delivery StatesHot-rolled, Controlled rolling, Normalizing, Annealing, Tempering,
Quenching, N+T, Q+T,and other delivery states are available as required
PackageStandard export seaworthy package,suit for all kinds of transport,or as required.
ContainerSize20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High)
40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High)
Trade termEx-Work,FOB,CNF,CFR,CIF,etc
ApplicationWidely used in a variety of architectural and engineering structures,such as
1.) metal constructions such as buildings,bridges,ships;
2.) transmission tower, reaction tower;
3.) lifting transportation machinery;
4.) industrial furnace;boilers
5.) container frame, warehouse goods shelves, etc


Product Details


Steel Flat Bar


Steel Flat Bar is a high-strength and versatile structural steel product widely used in construction, industrial fabrication, machinery, and manufacturing applications. Produced through precision hot rolling or cold rolling processes, it offers excellent mechanical strength, toughness, and durability under demanding conditions. Its uniform flat profile ensures consistent thickness, width, and dimensional accuracy, making it ideal for frameworks, supports, brackets, reinforcements, and custom metal components. With superior weldability, cutting, bending, and forming performance, Steel Flat Bars meet a wide range of engineering requirements while providing reliable long-term structural performance and cost-effective solutions for contractors, fabricators, and manufacturers worldwide.

Our factory specializes in producing high-quality Steel Flat Bars with strict quality control systems to ensure consistent chemical composition, mechanical properties, and surface finish. Equipped with advanced rolling mills, heat treatment facilities, and precision cutting equipment, we can provide customized dimensions, grades, and packaging to meet specific customer needs. With stable production capacity, competitive pricing, and professional export experience, we ensure timely delivery and reliable supply for global clients. Partnering with our factory guarantees not only superior product quality but also professional support, technical expertise, and tailored solutions for every steel flat bar application.


About Us


Shandong Jiangwei Metal Manufacturing Co., Ltd. — Source Factory Manufacturing, Quality You Can Trust.

As a source factory, our biggest advantage is factory-direct supply. Unlike trading companies, we directly control the complete process from raw material purchasing to production, inspection, and shipment. This allows us to reduce intermediate costs and provide customers with more competitive prices while maintaining stable product quality. Direct communication with the manufacturer also means faster response, efficient order handling, and more transparent cooperation.

Strong production capability is another important strength of our company. We continuously invest in modern manufacturing equipment and production technology to improve efficiency and ensure stable supply capacity. Whether customers require standard products, customized specifications, or large-volume orders, we can provide flexible production arrangements according to different project needs. Timely delivery is always our priority because we understand the importance of reliable supply in international business.

Quality is the foundation of our business. We implement strict quality control procedures throughout the entire production process. Products can be manufactured according to international standards such as ASTM, AISI, JIS, DIN, EN, and GB standards. Before shipment, all products undergo detailed inspections including size measurement, thickness testing, surface quality inspection, and mechanical property testing. We can also provide Mill Test Certificates, Quality Certificates, and third-party inspection reports according to customer requirements.

With years of rich international trade experience, we understand what global customers truly need—competitive prices, reliable quality, stable delivery, and professional service. Our products have been exported to many countries and regions worldwide, and we have built long-term partnerships with customers from different markets. Our professional export team is familiar with international business procedures and can quickly respond to customer requirements, ensuring efficient communication and smooth order processing. Choosing us means choosing a reliable supplier with manufacturing strength and proven global export experience.

Benefits of Steel Flat Bar


1. High Strength and Durability

Steel Flat Bar offers excellent mechanical strength and toughness, making it suitable for demanding structural and industrial applications. Its robust performance ensures it can withstand heavy loads, impact, and stress without deformation. This durability makes it ideal for construction frameworks, machinery supports, reinforcements, and fabrication projects. Long-term reliability reduces maintenance and replacement costs, providing customers with a cost-effective solution for structural and industrial needs.

2. Excellent Weldability and Fabrication

Steel Flat Bar provides superior weldability and processing performance, allowing easy cutting, bending, drilling, and welding without compromising mechanical properties. This flexibility enables manufacturers to produce customized components and complex assemblies efficiently. Excellent fabrication performance reduces production time and labor costs, making steel flat bars highly versatile for construction, machinery, industrial equipment, and metal fabrication projects.

3. Consistent Dimensions and Surface Quality

Steel Flat Bar is manufactured with precise dimensional control, ensuring uniform thickness, width, and surface flatness. The smooth surface quality improves machining, coating, and finishing operations, while consistent measurements reduce errors during assembly and fabrication. This precision is critical for applications that demand exact tolerances, such as structural components, mechanical parts, and industrial frameworks.

4. Versatility Across Industries

Steel Flat Bar is widely used across various sectors, including construction, automotive, machinery, industrial equipment, and metal fabrication. Its balanced strength, weldability, and formability allow it to be applied in frameworks, supports, brackets, reinforcements, and custom components. The material’s versatility makes it an essential solution for manufacturers and engineers seeking a reliable and adaptable steel product for multiple applications.

5. Cost-Effective Material Solution

Steel Flat Bar combines high strength, durability, and ease of fabrication at a competitive cost, offering excellent value for both industrial and construction projects. Its long service life reduces replacement frequency, and its versatility minimizes the need for multiple material types. This cost efficiency makes steel flat bars a practical choice for contractors, manufacturers, and industrial users looking for reliable and economical steel products.

6. Availability in Various Grades and Sizes

Steel Flat Bar is available in multiple steel grades, dimensions, and thicknesses to meet different project requirements. Customers can choose materials with specific chemical compositions, mechanical properties, and surface finishes suitable for structural, industrial, or custom fabrication applications. The wide availability ensures that engineers and manufacturers can source precise materials for their projects, reducing lead times and ensuring consistent quality.


Applications of Steel Flat Bar


1. Construction and Structural Frameworks

Steel Flat Bar is widely used in construction and structural engineering projects because of its excellent strength, durability, and versatility. It is commonly applied in building frameworks, support structures, reinforcement systems, braces, and connection components. The flat profile allows easy welding, drilling, and fabrication, making installation efficient and cost-effective. Steel flat bars provide reliable load-bearing performance and structural stability, helping ensure the safety and longevity of residential, commercial, and industrial buildings. Their adaptability makes them an essential material in modern construction projects worldwide.

2. Machinery and Equipment Manufacturing

Steel Flat Bar plays an important role in machinery and equipment production due to its excellent mechanical properties and processing performance. It is widely used to manufacture machine frames, supports, mounting plates, brackets, and structural components. The material can be easily cut, machined, welded, and formed into customized parts according to design requirements. Its strength and dimensional stability ensure reliable performance under continuous operation and heavy loads. Steel flat bars help improve equipment durability, manufacturing efficiency, and overall operational reliability across various industrial sectors.

3. Metal Fabrication and Custom Components

Steel Flat Bar is a preferred material for metal fabrication workshops because of its versatility and ease of processing. It is commonly used to produce custom brackets, frames, supports, connectors, base plates, and fabricated assemblies. The material supports various manufacturing processes including welding, bending, punching, and machining. Its consistent dimensions and reliable mechanical properties help achieve precise fabrication results. Steel flat bars enable manufacturers to create customized solutions for construction, industrial equipment, transportation systems, and specialized engineering projects while maintaining high quality and efficiency.

4. Transportation and Automotive Industry

Steel Flat Bar is widely used in transportation and automotive applications due to its strength, durability, and fabrication flexibility. It is commonly utilized in truck bodies, trailers, chassis components, vehicle frames, cargo handling equipment, and transportation infrastructure. The material provides dependable structural support and impact resistance while allowing efficient manufacturing processes. Its ability to withstand dynamic loads and challenging operating conditions makes it suitable for heavy-duty transportation applications. Steel flat bars contribute to vehicle safety, durability, and long-term performance in commercial and industrial transportation sectors.

5. Industrial Maintenance and Repair Projects

Steel Flat Bar is frequently used in industrial maintenance, repair, and modification projects because of its availability and versatility. It serves as a practical material for reinforcing structures, replacing worn components, repairing machinery, and fabricating replacement parts. The material can be quickly processed and installed, minimizing equipment downtime and maintenance costs. Its excellent weldability and strength allow engineers and maintenance teams to perform reliable repairs across manufacturing plants, warehouses, power facilities, and industrial operations. Steel flat bars provide an efficient solution for extending equipment service life.

6. Fencing, Gates, and Security Structures

Steel Flat Bar is commonly used in the production of fences, gates, railings, security barriers, and decorative metal structures. Its flat shape provides an attractive appearance while delivering the strength needed for safety and protection. The material can be easily welded, cut, and formed into various designs to meet architectural and security requirements. Steel flat bars are suitable for residential, commercial, industrial, and public infrastructure projects. Their durability and low maintenance requirements ensure long-lasting performance in both indoor and outdoor environments.

Quality Control and Technological Innovation


The company has an experienced technical R&D team, using internationally advanced production processes and testing equipment to ensure that each batch of products meets international quality standards. We strictly implement the ISO quality management system. From raw material procurement to finished product delivery, every link is strictly controlled to provide customers with the most reliable product guarantee. At the same time, we continue to explore the application of new technologies and new materials, drive development with innovation, and maintain our leading position in the industry.


Service Concept and Market Layout


The company adheres to the customer-centric service concept, provides customized solutions, responds quickly to customer needs, and ensures the punctuality of delivery and the thoughtfulness of service. Our foreign trade team is proficient in multiple languages, familiar with international trade rules, and can communicate effectively to provide customers with professional and efficient international trade services. At present, the company's products have successfully entered many international markets such as Europe, America, Africa, and Asia, and have won wide praise and trust.


Our Services


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