Sucker Rod Couplings Features Sizes SUCER ROD
2019-11-18 · ToughTorq™ high strength coupling threads are cold formed, which reshape the steel fibres to follow the thread profile. This process improves resistance to corrosion and abrasion, leaving a hardened thread flank and residual compressive stress in the thread root. This increases fatigue resistance in all forms of loading (tension and torsion).
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