... :10.3-219mm 4)thickness :10.3-28mm ERW steel pipe Outside Diameter:10.3mm-219.1mm Wall Thickness:10.3 ... etrc.STANDARD:ASTM A53GrA,GrB,BS1987-1985,GB3091-2001.Application:Irrigation,construction,communication gas and oil.Packing bundles:packed by steel ... Steel Tube Co.,Ltd. Address: No.14,District2,Dadong Steel Pipe Market, Development Zone,liaocheng, shandong, china Tel:86-0635-2111838Fax ...