API Coupling for Tubing Casing

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API Coupling for Tubing Casing The coupling is manufactured by seamless process, mainly used in underground engineering requiring pulling tubing & casing. Our company improved coupling processing process, selected standard datum plane during coupling processing, assured the axiality. We also improved the phosphorizing process, the phosphorized film is uniform and dense, has good anti-rust performance, the thread surface quality has been improved, enhanced the hardness and wear resistance, reduced thread gluing, extended the service life of tubing, casing and coupling. API tubing coupling Extemal upset Non-upset Label 1 Size Outside diameter mm Mass kg Label 1 Size Outside diameter mm Mass kg Regular Special clearance Special bevel Regular Special clearance 1.050 26.67 0.38 - 0.38 1.050 26.67 0.23 0.23 1.315 33.40 0.57 - 0.57 1.315 33.40 0.38 0.38 1.660 42.16 0.68 - 0.68 1.660 42.16 0.59 0.59 1.900 48.26 0.84 - 0.84 1.900 48.26 0.56 0.56 2-3/8 60.32 1.55 1.07 1.55 2-3/8 60.32 1.28 1.28 2-7/8 73.02 2.40 1.55 2.40 2-7/8 73.02 2.34 2.34 3-1/2 88.90 4.10 2.38 4.10 3-1/2 88.90 3.71 3.71 4 101.60 4.82 - 4.82 4 101.60 4.35 4.35 4-1/2 114.30 6.05 - 6.05 4-1/2 114.30 4.89 4.89 API Casing coupling Round-thread Buttress thread Label 1 Size Outside diameter mm Mass kg Label 1 Size Outside diameter mm Mass kg Short Long Regular Special clearance 4-1/2 114.30 3.62 4.15 4-1/2 114.30 4.55 3.48 5 127.00 4.66 5.75 5 127.00 5.85 4.00 5-1/2 139.70 5.23 6.42 5-1/2 139.70 6.36 4.47 6-5/8 168.28 9.12 11.34 6-5/8 168.28 11.01 5.65 7 177.80 8.39 10.83 7 177.80 10.54 6.28 7-5/8 193.70 12.30 15.63 7-5/8 193.70 15.82 9.29 8-5/8 219.08 16.23 21.67 8-5/8 219.08 20.86 10.80 9-5/8 244.48 18.03 25.45 9-5/8 244.48 23.16 12.02 10-3/4 273.05 20.78 - 10-3/4 273.05 25.74 13.39 11-3/4 298.45 22.64 - 11-3/4 298.45 28.03 - 13-3/8 339.72 25.66 - 13-3/8 339.72 31.77 - 16 406.40 34.91 - 16 406.40 40.28 - 18-5/8 473.08 54.01 - 18-5/8 473.08 62.68 - 20 508.00 43.42 57.04 20 508.00 50.10 - The size designation for the coupling is the same as the designation for the pipe on which the coupling is used.

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Wuxi Fastube Energy Development Technology Co.,Ltd

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