... pieces 2.ISO 9001:2000 ,BV approved 3.Process: sand casting 4.Manufacture and OEM 5.Material:copper alloy 1 ... your requirement or drawing 6. Professional service 7. Process: sand process casting 8. Application: pump parts 9. Surface treatment: ... numerical lathe, all types of lathe.7.Surface finish processpolishing, sand blasting, heat treatment, painting, powder coating, anodizing, electroplating, ...