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The coupling blanks are shaped or machined to precise size and tolerance, threaded using a cold-forming rolled thread tap, and coated to provide anti-galling and lubrication properties.
Class T sucker rod couplings are suggested for installation when abrasion or corrosion-abrasion is not a concern.
Sucker rod couplings are offered in API full size and slim hole, with oversize options available upon request.
Spray Metal is a surface hardening process involving the application of a nickel, chrome, boron, and silicon-based powder onto the base metal, which is subsequently melted. This results in a hard, dense, and uniform surface with a very low friction coefficient and high corrosion resistance.
Class SM sucker rod couplings are advised for use in installations where abrasion or corrosion-abrasion is a concern. Sucker rod couplings are offered in API full size and slim hole, and oversize options can be provided upon request.
Puyang Zhongshi Group Co., Ltd
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Main Product:
Sucker Rod Pump,
Pump Unit,
Pump Jack,
Wellhead Installation ,
Cementing Head,
Casing Centralizer
