... steel, stainless steels, high heat alloys, plastics, brass, bronze, aluminum and aluminum casting ect.3.Standard: ASTM, SAE, BS. DIN, UNI4 ... hardeded6.Processing Methods: CNC machining, General Engineering, Turning, Drilling, Polishing, Knurling, Tapping, Threading, Burnishing, Slab Milling, Face Milling and End Milling faucet part