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