... , 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 ... RUIYIN INTERNATIONAL TRADE CO.,LTDATTN:SELINASKYPE;hbxsd_selinaCELL:86-15830565735 Mild steel hot rolled structural I beam I ...