H-beam is a new type of steel for economic construction Height H × width B × web thickness t1 × wing thickness t2, such as the H-beam Q235, SS400 200 × 200 × 8 × 12 is 200mm wide and 200mm wide web thickness of 8mm, wing thickness 12mm wide flange H-beam , The grade is Q235 or SS400. Method for Representation of Hot – Rolled H – Section Steel. H-beam is divided into wide flange H-beam (HK), narrow flange H-shaped steel (HZ) and H-shaped steel pile (HU) three categories. The height of H × width B × web thickness t1 × wing thickness t2, such as the H-beam Q235B, SS400 200 × 200 × 8 × 12 200mm wide and 200mm wide web thickness of 8mm, wing thickness of 12mm Wide flange H-beam grades Q235BQ, 345B or SS400.