1. Tooling design 2. Grey iron/graphite cast iron 3.shell casting 3. OEM service 4.finish ... and close dimensional tolerances, the weight is less 130kg. The sand casting process generally is capable of much larger castings than ... machine, numerical lathe, all types of lathe.7Surface finish processPolishing, sand blasting, heat treatment, painting, powder coating, anodizing, electroplating, mirror ...