precision turned machining parts 1.material:carbon steel,stainless steel,aluminum alloy 2.finish:polish,brush,grinding,turning We ... parts, machining parts, mouldsMaterialcarbon steel, stainless steel, aluminum alloy, copperProcedureCutting,stamping,punching,threading,bending,welding,grinding,machining,surface ... cutting machine, rolling machine and so on. precision turned machining parts