ERW Carbon Steel Pipe DN406 ASTM A500 GR.C For Steel Structure Fabrication

Engineered for the rigorous demands of large-scale construction, Huayang's DN406 ASTM A500 Grade C pipes feature an optimized carbon-manganese chemistry that delivers higher yield strength than standard Grade B sections. The 406.4mm circular hollow sections (CHS) are manufactured through state-of-the-art cold-forming and high-frequency electric resistance welding, resulting in a smooth surface finish and tight geometric tolerances that facilitate seamless integration into complex trusses and modular frames. Unlike general-purpose pipes, our Grade C structural units undergo stringent quality control for weld-zone ductility and wall thickness uniformity, ensuring predictable performance under dynamic wind and seismic loads. As a leading manufacturer, Huayang provides these high-yield conduits with precise end-preparations, offering a reliable, cost-efficient solution for stadium roofs, airport terminals, and heavy industrial plant supports where structural safety is paramount.