... 2. OEM service available 3. Material: Copper (Aluminum Bronze, Bronze, Silicon brass) Iron(Ductile iron)and so on 4. ... or drawing 6. Professional service 7. Process: sand process casting 8. Application: pump parts 9. Surface treatment: Polishing, ... (Aluminum Bronze, Bronze, Silicon brass, Tin bronze and so on)2.Processsand casting, gravity casting, low-pressure die casting, high-pressure die casting.3 ...