Hot rolled structural steel beams S355JR carbon steel profiles

The S355JR hot rolled steel beam adopts innovative gradient temperature control rolling technology, which forms a fine grain structure (8μm) in the web plate through zone cooling and retains moderate coarse grains (12μm) at the flange, achieving the best match between strength and toughness. Its intelligent rolling system can adjust the pass reduction in real-time, reducing residual stress by 40%.

S355JR carbon steel profile utilizes a machine vision inspection system to identify surface microcracks through hyperspectral imaging, with a defect detection rate of 99.7%. The innovative Nb Ti composite microalloying design stabilizes the impact energy above 60J at -20℃.

As a preferred material for green buildings, it has obtained EU CPR certification and achieved a breakthrough of 25% span increase in zero energy buildings.