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 I beam / I-beam / I beeam steel1> 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 Standard size : 80*46*3.8mm-600*220*12mm5>Packing: bundles or knitting bag or ...