OCTG Casing and Tubing Pipes for the Oil and Gas Mechanical propertystandardGradeTensile strength（MPa）Yield strength（MPa）API SPEC 5CTJ55≥517379～552K55≥517≥655N80≥689552～758L80(13Cr)≥655552～655P110≥862758～965Chemical componentsstandardgradechemical components（％）CSiMnPSCrNiCuMoVAlsAPI SPEC 5CTJ55 K55 (37Mn5)0.34～0.390.20～0.351.25～1.50≤0.020≤0.015≤0.15≤0.20≤0.20//≤0.020N80 (36 Mn2V)0.34～0.380.20～0.351.45～1.70≤0.020≤0.015≤0.15///0.11～0.16≤0.020L80(13Cr)0.15～0.22≤1.000.25～1.00≤0.020≤0.01012.0～14.0≤0.20≤0.20//≤0.020P110 (30CrMo)0.26～0.350.17～0.370.40～0.70≤0.020≤0.0100.80～1.10≤0.20≤0.200.15～0.25≤0.08≤0.020Available size for OCTG Casing and Tubing Pipes for the Oil and GasCasing Diameter: 4 1/2" - 20", 114.3mm - 508mm Tubing Diameter: 2 3/8" - 4 1/2", 60.32mm - 114.3mmThickness: 0.2" - 0.875" , 5.12mm - 22.22mmLength: R1, R2, R3Dimensions and Tolerances：Outside Diameter,Wall Thickness and Weight Tolerances:ItemToleranceOutside DiameterPipe BodyD≤101.60mm±0.79mD≤114.30mm±＋1.0%D- 0.5%Dcoupling±1%DWall Thickness0,-12.5%tWeightSingle Lengths＋6.5%-3.5%Carload Lots0,-1.75%Thread type: PE, LTC, STC, BTC Thread Parameter Tolerances：Type and Sizetapermm/mPitchmmHeightmmAngledeg.aLength L4(ExternalThread)Chamferon End of Pipedeg.aStandoffPerInchAccu-mulativePipeThreadCouplingThreadRoundThreadTubing2 3/8"～4 1/2"10Threadsper inch+5.208-2.600±0.76±0.152+0.051-0.10211/211/2P+5-0±11/2P±11/2P8Threadsper inch+5.208-2.600±0.76±0.152+0.051-0.10211/21P+5-0±1P±1PRound ThreadCasing 4"～7"+5.208-2.600±0.76±0.152+0.051-0.10211/21P+5-0±1P±1PButtressThreadCasing4 1/2"～7"Coupling+4.50-2.50±0.051±0.102±0.025/-+5-0+11/2P-0+0-11/2PPerfectthread+3.50-1.50Lmperfectthread length+4.50-1.50Remark: a:p---PitchWarehouse of OCTG Casing and Tubing Pipes for the Oil and GasOur Advantages of OCTG Casing and Tubing Pipes for the Oil and GasHigh precision of OD, oval degree, straightness and size dimension Smooth surface and beautiful appearance. High strength Good toughnessApplicationOCTG casing and tubing pipe is widely used in oil and gas transmitting pipeline, oil field, drilling platform fields etc. CustomersThe annual yearly output is about 30000 tons which is exported to all over the world, such as Korea, Malaysia, Vietnam, Thailand, Indonesia, Taiwan, India, Iran, UAE, Egypt, United Kingdom, Serbia, Argentina and so on.
