steel i beams for sale 1)Material:Q235,SS400,A36,ST37-2,EN10025,DIN10025,S235JR 2)Size:100x55x3.6mm-630x180x17mm 3),ASTM,BS I beamapplication1).used for a variety of building structures(2).used for the bridge, vehicle construction(3).used for the support, machinery and other usages steel i beams for sale