... alloy 2.Finish:powder coat,zinc plated elevator hardware sheet metal part1.Strictly quality control by 100% inspection2.Small quantity ... stainless steel, aluminum alloy, copperProcedurewelding,stamping,cutting,punching,bending,grinding,machining,threadingSurface finishingzinc plating, hot dipped galvanized, powder coat, e ... cutting machine, rolling machine and so on. elevator hardware sheet metal part