... brass 3.process : Machining by cold pressure die-casting machine 4.surface treatment : sand-blasting,polishing ,powder coat ... precision. Currently a variety of copper or brass pipe fittings are produced by high pressure die casting ... mould engraving machine, CNC forming machine CNC turning, EDM, Linear cutting machine, Die spotting machine(200T), Die casting machine, Lathe, Grinding machine; CMM, ...