Structural Steel H Beam in S355jr Carbon Steel for H Beam Application

The product line integrates four high-demand structural steel grades, each tailored to specific load and application requirements:​

ASTM A36: A globally ubiquitous carbon steel grade (USA standard) with a minimum yield strength of 250MPa and tensile strength of 400-550MPa. Renowned for its balanced ductility, impact resistance, and weldability, it is ideal for general structural roles in commercial, industrial, and residential buildings.​

ASTM A992: The preferred grade for wide-flange beams in North American construction (ASTM standard), offering a minimum yield strength of 345MPa and enhanced tensile strength (485-620MPa). It exhibits superior toughness, seismic resilience, and fatigue resistance, making it suitable for heavy-duty frameworks, bridges, and high-rise structures.​

Q235B: A foundational carbon steel grade (GB standard) with a minimum yield strength of 235MPa, valued for its excellent formability, weldability, and cost-effectiveness. It is widely used in general structural components such as purlins, lintels, and secondary beams.​

Q345B: A low-alloy high-strength steel grade (GB standard) with a minimum yield strength of 345MPa, delivering higher load-bearing capacity and corrosion resistance than carbon steel grades. It is optimized for large-span structures, industrial machinery supports, and infrastructure projects requiring enhanced structural performance.​

All grades comply with their respective international standards (ASTM A36/A992, GB/T 700/1591) and undergo rigorous material testing-including chemical composition analysis, tensile testing, and impact testing-to ensure consistent performance and freedom from internal defects.