precision turned machining parts 1.material:carbon steel,stainless steel,aluminum alloy 2.finish:polish,brush,grinding,turning We specialize ... , aluminum alloy, copperProcedureCutting,stamping,punching,threading,bending,welding,grinding,machining,surface finishSurface finishingzinc plating, hot dipped galvanized, powder ... cutting machine, rolling machine and so on. precision turned machining parts