... china investment casting supplier, china investment .wire deck plate key1. Deck Plate Key,deck plate Casting: investment casting ,precision casting, lost ... ,alloy steel, heat resistant steel ,tool steel ,brass and aluminum ,according to DIN ,EN, ASTM, BS,JCSI.3. ... Piece numbers: small, medium and large series.4. Process: cast, machining, turning, milling, drilling, thread cutting.5. Surface treatment ...