H beam profile steel H type iron S355JR low carbon steel for building

The S355JR H beam adopts an innovative heterogeneous composite rolling process to form a gradient grain structure at the junction of the web and flange, which improves the seismic performance of the joint by 35%. Its unique online quenching system achieves uniform grain size control of 8-12 μm.

H type iron S355JR utilizes intelligent dimension detection technology to monitor section tolerances in real time through laser 3D scanning, controlling warpage within 0.15mm/m. The innovative low crack sensitivity formula enables Z-directional performance to reach Z35 level.

As a core material for modular construction, H beam profile steel S355JR has passed the European standard EN 10025 certification and achieved a 40% increase in construction efficiency in the field of prefabricated steel structures. It has been successfully applied in multiple emergency hospital construction projects.