elevator hardware sheet metal part 1. Material:carbon steel,stainless,aluminum alloy 2.Finish:powder ... steel, stainless steel, aluminum alloy, copperProcedurewelding,stamping,cutting,punching,bending,grinding,machining,threadingSurface finishingzinc plating, hot dipped galvanized, powder coat, e ... machine, rolling machine and so on. elevator hardware sheet metal part