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couplings, sucker rod couplings, sucker rod joints, sucker rods, sucker rod connectors, Manufacturer and Supplier - China
API SUB COUPLINGS (5/8''3/4 3/4''7/8 7/8''1 1''1-1/8)
API couplings
1）Type: class T, FS and SH coupling
2）Coupling diameter: 5/8 ",3/4",7/8",1",1-1/8"
3) Weight: 0.41-1.29 KG/Pcs
4）Material: AISI 5I40
5)Basic Hardness: HRC 16-23
6)Operating Temperature: -1000~400℃
7) Life: > 90 days
8）Standard: API Spec 11B
All of our couplings including API Class T Sucker Rod Couplings, API spray metal sucker rod couplings and API Change-Over Sucker Rod Couplings are made full in line with API SPEC 11B, with the size range of 5/8”, 3/4”, 7/8”, 1”, 1-1/8”.
