Description

Two-way protection arc sucker rod coupling is the special shape of spray welding layer on the sucker rod coupling is 0.5 mm wear-resistant corrosion-resistant alloy antifriction layer, through a special surface treatment, spray welding layer in the composition is in the process of friction and tubing, transferred to the surface of the tubing in the form of particles, to protect and to slow the abrasion on the surface of the tubing. The collar has obtained national patent, patent number: ***********3.3