... C51000, C52100, C54400, etc5. Iron: 1213, 12L14,12156. Aluminum: Al6061, Al60637.OEM according to your requestProducts Availablebolts, screws, ... yellow passivation, gold passivation, galvanizing, satin, etc.Processing Methodcnc machining, turning, milling, drilling, grinding, broaching, welding and assemblyAdvantages1 ... transportation or as requiredCertificateISO9001:2008 OEM aluminum stamping part