Hot rolled structural steel H beam 1. Standard: GB, JIS, ASTM 2. Length ... : Q235B, Q235, Q345B, SS400, A36 Hot rolled structural steel H beamGrade: Q235B, Q235, Q345B, SS400, A36…Standard: JIS/ ASTM ... / GB/ BS/ ...Length: 5.8m, 6m, 12m, or as the customers’ ... in bulk or in bundle. Common Size Specification (h*b*t1*t2)Theoretic Weight(kg/m)Chinese Standard(GB ...