... Steel I beam 1.Grade: Q235 Q345 A36 SS400, etc 2.Size:100*68-630*180mm 3.Web Thickness: 4.5-17mm Steel I ... 4.5-17mm4.Flange Thickness: 7.6-15.8mmSteel I beam is widely used for various architectural structure, bridges, ... steel ( like I Beam , Channel ,Angle ,H Beam etc.) , various of sheets/coil (like Galvanized Steel Plate, Preprinted Galvanized Steel Coil, Hot Rolled Steel Plate , Cold rolled steel ...