I beam steel section Size:100*100mm-900*300mm. grade: Q235B,Q345B,SS400,etc. Best price,best quality Hot rolled I beam section ... 1. Standard: GB, JIS, ASTM ST2. Material: Q235, Q345, SS400 ... call me or send email to me for further discussion!!! I am waiting for your any comments.Catherine ZhangMobile: 86-15131569184 ...