Slim hole coupling

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  • 2022-07-19

    The sucker rod coupling have the same box thread size in each end are used for connecting sucker rod and/or pony rod, and/or sinker bars with sucker rod threads. Specification: 5/8”, 3/4”, 7/8”, 1”, 1-1/8Class: T, SM (Spraying Metal)Standard: API 11B Specification