... Steel Handle,door handle,stainless steel square door handles 1.Material : Stainless steel 304, 3162. Surface: mirror polish, high polished3.Stainless Steel Handle,door handle,glass door handle,stainless steel ... shell process.2. Materials: stainless steel ,carbon steel ,alloy steel, heat resistant steel ,tool steel ,brass and aluminum ,according to ... to ISO 9001 2001 Stainless Steel Handle,door handle