Rod anti-wear couplings are manufactured by a special surface treatment process by spraying an anti-wear coating on an ordinary material with a chemical composition that complies with API Spec 11B.
The spray layer extending to the end face protects the collar body from corrosion protection. The full extrusion thread greatly improves the tensile strength of the collar, and the higher surface finish reduces the friction coefficient between the collar and the tubing, ensuring that the spray layer still maintains excellent wear resistance and corrosion resistance in the harsh working conditions down the mine. Significantly increase the service life of pipe and rod.