... metal part punching,stamping,bending, welding ISO9001; ISO14000 Name One way door locks Item No. TP030817MaterialSECC, stainless steelProcessstamping,punching, ... iron ( SPCC, SECC, SPTE, tinplate), aluminum alloy,red copper,brass, bronze alloy are availableSurface treatmentplating, Zinc plating, enamel, ... & Riveting workshop # Warehouse # Carton package # Wood package # Mold One way door locks