... 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, ... Ra : 0.8mm I.D. 0.25mmShaft---motor shaft,steel shaft,metal shaft Basic process:1.the shafts are made by customized ...