... sheet metal part 1. Material:carbon steel,stainless,aluminum alloy 2.Finish:powder coat,zinc plated elevator hardware sheet metal ... in mechanical parts and fabrication service over 10 years, occupying 70 ... and BV mark of the products, we have won quality certificate ... copperProcedurewelding,stamping,cutting,punching,bending,grinding,machining,threadingSurface finishingzinc plating, hot dipped galvanized ...