Application :For the transmission of OIL & Gas Specs: OD: 40.26mm--114.3mm WT: 3.18mm-16mm LENGTH: R1, R2,R3 Standard & Grade : API 5CT J55/K55/N80/C75/L80/C90/T95/Q125 Process Type: Seamless , ERW Ends: Beveled , Square cut, with NUE/EUE connection Surface:Anti- corrosion water based paint Packing: Protection Caps in both End, Waterproof Paper Wrapped, Two Tags