Contact Now API 11B Sucker Rod CouplingsSucker rod coupling Type: Full size coupling, Slime hole coupling, Sub-coupling Specification: 5/8”, 3/4”, 7/8”, 1”, 1-1/8” Grade: T, SM
Contact Now API 5CT Tubing CouplingsIntroduction of tubing coupling The coupling is connector of tubing Thread type: EUE, NUE Specification: 2-3/8”, 2-7/8”, 3-1/2”, 4”, 4-1/2” Grade: K55, J55, N80, L80, P110 Property of material
Contact Now API 5CT Casing CouplingsIntroduction of casing coupling The coupling is connector of casing Thread type: STC, LTC, BTC Specification: 4-1/2”, 5-1/2”, 6-5/8”, 7”, 9-5/8”, 13-3/8” Grade: K55, J55, N80, L80, P110 Property of material
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