... .material:carbon steel,stainless steel,aluminum alloy 2.finish:polish,brush,grinding,turning We ... alloy, copperProcedureCutting,stamping,punching,threading,bending,welding,grinding,machining,surface finishSurface finishingzinc plating, hot dipped galvanized, powder coat ... bending machine, CNC boring machine, punching machine, Welding robot, powder coat finishing line ,plasma cutting machine, hacksaw ...