Our hot rolled structural angle bar, available in precise specifications of 50X50X5mm, 85X85mm, and 125×125mm, is a high-performance structural steel product engineered with S355 and Ss400 equivalent grades, tailored to meet the rigorous load-bearing and stability requirements of diverse industrial and construction applications. As a specialized structural angle bar, it integrates advanced hot-rolling technology, standardized dimensional precision, and superior mechanical properties of equivalent-grade steels, making it a reliable and versatile solution for structural framing, load-bearing supports, and various engineering components.
A core highlight of this product lies in its adoption of S355 and Ss400 equivalent grade carbon and low-alloy structural steels, which adhere to stringent international standards and deliver consistent, high-quality mechanical performance. S355 equivalent grade steel, compliant with European EN 10025 standards, is a low-alloy high-strength steel boasting a minimum yield strength of 355 MPa and a tensile strength range of 470-630 MPa, characterized by excellent toughness, weldability, and impact resistance-ideal for heavy-duty structural applications. Ss400 equivalent grade steel, aligned with Japanese JIS G 3101 standards, is a versatile carbon structural steel with a minimum yield strength of 245 MPa and tensile strength of 400-510 MPa, offering balanced processability and durability for general structural purposes. Both equivalent grades ensure the angle bar meets the performance requirements of global engineering projects, providing reliable structural support and long-term service life.
This structural angle bar is available in three standardized hot-rolled specifications-50X50X5mm, 85X85mm, and 125×125mm-each meticulously designed to cater to different load-bearing and dimensional requirements. The 50X50X5mm specification, with its 50mm equal legs and 5mm thickness, is ideal for light to medium-duty applications such as small-scale structural frames, decorative supports, and machinery brackets, balancing strength and material efficiency. The 85X85mm equal-angle profile offers enhanced cross-sectional area, suitable for medium-duty structural components including roof trusses, wall supports, and secondary beam brackets in commercial and industrial buildings. The 125×125mm specification, as the largest in this line, provides robust load-bearing capacity, making it perfect for heavy-duty applications such as main structural frameworks, bridge supports, and large-scale infrastructure components.
All angle bars are manufactured via advanced hot-rolling technology, a critical process that optimizes their structural integrity and performance. During production, steel billets of S355 and Ss400 equivalent grades are heated to a high temperature (1100-1250°C) to achieve optimal malleability, then precisely rolled into the desired equal-angle profiles. This high-temperature processing refines the steel's grain structure, eliminates internal defects such as porosity and inclusions, and significantly improves toughness and ductility. The hot-rolling process also forms a natural black oxide finish, which provides a uniform surface texture and tight dimensional tolerances, adhering strictly to international standards for structural angle bars. This finish not only reduces the need for secondary processing but also ensures consistent cross-sectional geometry, enabling uniform stress distribution across the entire profile when integrated into structural systems.
The structural angle bar's equal-angle design further enhances its versatility and performance. The symmetric cross-section, with two legs of identical length, ensures balanced stress transmission, minimizing the risk of deformation under lateral or axial loads-critical for structural stability. Additionally, the hot-rolled surface and precise dimensional accuracy facilitate easy fabrication, including cutting, drilling, bending, and welding, allowing for seamless integration with other structural components such as beams, columns, and fasteners, thus improving construction and installation efficiency.
Rigorous quality control protocols are implemented throughout the entire production cycle to ensure product reliability. Raw materials undergo strict incoming inspections, including chemical composition analysis and mechanical property testing, to verify compliance with S355 and Ss400 equivalent grade requirements. During the hot-rolling process, real-time monitoring is conducted to maintain consistent profile dimensions, leg squareness, and surface quality. Final products are subjected to comprehensive post-production checks, including tensile, yield, and impact tests, as well as dimensional verification of leg length, thickness, and angle squareness, to guarantee that every unit meets the highest performance and safety standards for structural applications.
This hot rolled structural angle bar, with its diverse specifications and high-quality equivalent grades, finds extensive application across industries. It is widely used in building construction (residential, commercial, and industrial frameworks), infrastructure projects (highways, bridges, tunnels), machinery manufacturing (equipment frames, bases, and brackets), shipbuilding, and agricultural engineering. The varied specifications and equivalent-grade options allow engineers and contractors to select the optimal solution for specific project requirements, balancing performance, cost-effectiveness, and installation convenience.
In summary, our hot rolled 50X50X5mm, 85X85mm, 125×125mm structure angle bar, engineered with S355 and Ss400 equivalent grades, combines advanced manufacturing technology, precise dimensional design, and superior mechanical properties. Backed by stringent quality control and international standard compliance, it delivers reliable, durable, and cost-effective structural solutions for light-duty to heavy-duty engineering applications. Whether for standard construction needs or customized projects, this product line provides a trusted choice for global customers seeking high-performance structural angle steel.
