I beam steel 1.Hot rolled and galvanized i beam 2.Grade: Q235, SS400, ASTM A36 3.Length: 6m,9m,12m I beam steel1) TYPE ... : HOT ROLLED I BEAM 2) SIZE: 10#---63# 3) LENGTH: 6M ... ) MATERIAL: Q235, SS400, ASTM A 36, S235JR GB STANDARD I BEAM SIZE(MM)H(MM)B(MM)T(MM)KG/MSIZE ...