I beam 1) TYPE: HOT ROLLED I BEAM 2) SIZE: 10#---63# 3) LENGTH: 6M, 9M, 12M 4) MATERIAL: Q235, SS400, ASTM A 36, S235JR 1 ... ) TYPE: HOT ROLLED I BEAM 2) SIZE: 10#---63# 3) LENGTH ... : 6M, 9M, 12M 4) MATERIAL: Q235, SS400, ASTM A 36, S235JRChinese ...