StandardAstm, bs, gb, din, gb, en Grad16mn, q195, q215, q235, q345, st37, st42, st52 Wall thickness1.2-2.0 mm LengthCustomersâ?? request Secondary or nonon-secondary Alloy or nois-alloy Special pipemt pipe ApplicationSteel structure, metal product, construction structure Place of originHebei, china Section shaprectangle