... &457mm (1/2”-22”) 5.Wall Thickness:2mm-70mm 6.Grade:10#,20#,45#,16Mn,27SiMn,Q235,ST42,ST52,, A106-a,A106 ... Pipe, Pertroleunm and natural gas industry Chemistry industry, Electric industry 10.Package:Bundle packing, Bevelled end or plain end or wamished ...