GB standard I beam (1) material: Q235,SS400,A36,ST37-2,EN10025 (2)Size:100*55*3.6mm-630*180*17mm (3)packing:bulk or container GB Standard I-Beam (1) material: Q235,SS400,A36,ST37-2,EN10025,S235JR (2)Size:100*55*3.6mm-630*180*17mm (3)packing:bundle with strips Modelh(mm)b(mm)d(mm)Theoretic Weight(kg/m)10100684.511.2611212074513.98712.612674514.22314140805.516.891616088620.51318180946.524. ...