I beam / I-beam / I beeam steel 1.Material : SS 400, ST37-2 , A36, S235 JRG1, Q235, ... , 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 ... RUIYIN INTERNATIONAL TRADE CO.,LTDATTN:SELINASKYPE;hbxsd_selinaCELL:86-15830565735 Mild steel hot rolled I beam A36,SS400,Q235,ST37-2