... ,stamping,bending, welding ISO9001; ISO14000 Name Union door locks accessories Item No. TP030819MaterialSECC, stainless steelProcessstamping,punching, ... ,red copper,brass, bronze alloy are availableSurface treatmentplating, Zinc plating, enamel, hot-dip, polishing, hardening clear ... , chrome plating, nickel plating, zinc plating, oil injection, black oxide coating and so onMaterial thickness0.8 - 2 ...