steel I beam 1.Material: Q235, Q345/SS330, SS400/ S235JR, S355JR 2. ... -300mm 3.length:6,9,12m 4.Factory,ISO9001 Steel I Beam is widely used in various building structures, bridges, vehicles ... , support, and machinery.1) TYPE: HOT ROLLED I BEAM 2) SIZE: 10#---63# 3) LENGTH: 6M, 9M, 12M ... 63#B630*178*15131.298 63#C630*180*17141.189 I beam