... .N80.L80.K55,P110 Length: R1.R2.R3 API Casing and tubing1.) Standard: GB,DIN,EN,ASTM2.) O.D: 1/2 ... properties (Tensile strength,Yield strength, Elongation, Flaring, Flattening, Hardness, impact) , OD and WT ,No-destructive,Hydralic7.) Surface treatment: Oil, varnish, caps at ...