Bimetallic Screw

PTA (Plasma Transferred Arc) automatic alloy spaying is a newly applied technology, especially for precise requirement of screws. Comparing to traditional manual alloy spraying, PTA has better performance with the stability and outlook of screws. Advantages: By spraying high quality alloy powder on screw flight with layer thickness 1.5-2.Omm, screws can get higher performance in both wearing & corrosion resistant performance.