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API 5/8” Class T Slim Hole Sucker Rod Coupling1)Material: AISI 5140 2)Standard: API Spec 11B 3)Specification: O.D.: 1-1/4”(31.80mm) I.D.: 15/16”(23.81mm) Length: 4”(101.6mm) Weight: 0.41kg4)Other Size: 3/4”; 7/8”;1”; 1-1/8”5)Features: The Class T sucker rod couplings are manufactured with a through hardness of between 16 and 23 Rc. This results in high tensile and fatigue strength for the sucker rod couplings. The outside diameter of the sucker rod couplings is smooth to minimize stress concentrations, and an accurate chamfer allows for controlled contact stress. Yantai Yunsheng Petroleum Machine Accessories Co. Ltd., founded in 2005, is a professional manufacturer of API Spec 11B Sucker Rod Couplings, including Spray Metal coupling, class T coupling, Sub OD coupling, with various type of Full size, Slim Hole, Over Size, with Big Chamfer, with Wrench Flat, with Bidirectional Cambered Surface Protection, etc., and the thread size are available at 5/8”, 3/4”, 7/8”, 1”, 1-1/8”. Owning world top level equipments and technicians, the monthly production capacity is more than 50,000pcs. All of our couplings are excellent in Quality and reasonable in Price, and the production & inspection are being done fully in accordance with API Spec11B standard. We got our API Spec 11B Certificate for couplings , the Certificate No. is 11B-0088, and we began our International sales since then. we have exported our couplings to America, Peru, Argentina, Kuwait, India, Indonesia, etc., and have established longterm cooperation with many of our customers home and abroad, based on our good quality and Service.
