ERW Carbon Steel Pipe & Tube OD:10mm-325mm Thickness:0.6-12mm Material:Q195,Q195+Q235, Q235,Q345 Length:2m-12m 1.Standard: ASTM A106,ASTM A53,GB/T8162,GB/T8163,API5L2.Size OD: 168-219mm WT: 6-22mm Length: 2-12m3.Surface treatment: black painted, varnished, galvanized, or anti-corression treatment.4.Pipe end: plain end, bevelled end with plastic caps protected.5.Applications: general service, ...