... machines,welding machines, meter lathes3.Material:Carbon steel(cold rolled steel sheet,galvanized steel sheet or tube),stainless steel,copper ,brass,aluminum,etc4.Finish:zinc ... , threading,welding, tapping, rivetingMaterialAluminum, copper, brass, stainless steel, steel, iron, alloy, zinc etc.FinishPolishing; Anodize; SandingPowder coating; Vacuum Plating; Nickel, Zinc, Tin, Silver plating ...