... and investment casting process in Shandong, China ( Valve Casting / Casting valve ).3. Standard: OEM service offered.4. Size ... the drawing requirements5. Weight: 0.002-120kg6. Valve accessories, like stems, valve caps, bolts of living, shafts; Pumps, pipes ... equipment (foundry used): electric furnace, heat treatment cellar.numerical control lathe, CNC machining center, boring machine, universal miller, ...