hot sale I beam 1> Material:Q235, Q345, SS400 2> Length:6M,9m,12m ... /ISO9001:2008 4>size:50*25*3/4/5 1> Material : SS 400, A36, S235 JR, Q235 etc.2> ... 80*46*3.8mm-600*220*12mm5>Packing: bundles or knitting bag or according to the requirement6>Standard : GB/T 700- ... offer upon receipt of your detailed requirements, including the material, specification,quantitymy tele: 0086-0315-5417677 my mobilephone:86 ...