... casting part.2. We make them by precision casting and investment casting process in Shandong, China ( Valve Casting / Casting valve ).3 ... Weight: 0.002-120kg 6. Various products: Valve accessories, like stems, valve caps, bolts of living, shafts; Pumps, pipes, ... drill machine, bench drill machine, normal lathe, line cutter.10. Testing equipment (foundry used): elongation tester, hardness tester, ...