... at least1000hours is not Raw red rust 5ISO9001 TS169 sheet metal partSpecifications1metal stamping parts sheet metal part2ISO9001,2008,TS169493Material can be steel, brass, stainless ... : stamping, deep drawing , spot or seam welding, spinning, metal assembly are available.sheet metal part (3) Surface finish : coating-plating, Zinc plating, enamel, hot ...