... induction quenching machines, etc. 3>Strict and experienced QC team inspecting on every working procedure.Use high quality test equipment ... metallographic analysis. 4>After FQC,we pack goods carefully. Shaft DetailsMaterial:carbon steel,stainless steel,copper, beryllium copper, brass, ... : 0.8mm I.D. 0.25mm Shaft---drive shaft,carbon steel shaft,micro drive shaft Basic process:1.the shafts are made by ...