... 316 2. mirror polish, 3.Stainless Steel Handle,door handle,stainless steel square door handles 1.Material : Stainless ... Surface: mirror polish, high polished3.Stainless Steel Handle,door handle,glass door handle,stainless steel square door handlesDetails1. Casting: investment ... ,mechanical values for tensile strength. ,yield stress ,notched bar impact tenacity, x-ray,metallograph.7. Quality control: ...