I beam steel : 1:Standard: GB/T 700-1988 2.Grade: Q195 Q235 Q345 3.Packing:in bundles 4.Size:Height100-630mm I beam ... : product name, standard performed,materials, specifcation, quantity, length, handling time,measure way. Steel Grade: Q235,SS400Standard: GB/T 700-1988 Size: Middle heigth ... any hestation. I beam, Steel I beam, Steel profile. GB Standard.