... treatment, polishing, nickel plating, chrome plating, yellow passivation, gold passivation, galvanizing, satin, etc.Processing Methodcnc machining, turning, ... lathes3.Material:Carbon steel(cold rolled steel sheet,galvanized steel sheet or tube),stainless steel,copper ,brass,aluminum ... customers requirements. 7)Key words:sheet metal fabrication/metal component/sheet metal processing/metal stamping parts ...