Q235 welded steel pipe ASTM A 178 1.we supply ERW steel pipe 2.OD:57mm-325mm,thk:3mm-20mm 3.quality:ISO9001,2000 4.market Q235 welded steel pipe ASTM A 178  1)Thickness:2.5-75mm 2)Outer Diameter:32-630mm 3)Application:Fluid Pipe 4)Certification:ISO9001:2000

GB/T8163-2008 seamless steel pipe for fluid transport