I beam / I-beam / I beeam steel 1.Material : SS 400, ST37-2 , A36, S235 JRG1, Q235, Q345 etc. 2.Length : 6 meter, 9 meter Mild steel hot rolled I beam A36,SS400,Q235,ST37-2 I beam steel,hot rolled I beam SS400,mild steel I beam1> Material : SS 400, ST37-2 , A36, S235 JRG1, Q235, Q345 etc.2> Length : 6 meter, 9 meter ,12 meter 3> Chinese Standard size : 100*68*4.5mm-630*180*17mm4> European ...