steel I beam 1.Material: Q235, Q345/SS330, SS400/ S235JR, S355JR 2.size:80mm-300mm 3.length:6,9,12m 4.Factory, ... ISO9001 Steel I Beam is widely used ... structures, bridges, vehicles, support, and machinery.1) TYPE: HOT ROLLED I BEAM 2) SIZE: 10#---63# 3) LENGTH: 6M, 9M, 12M 4 ...