... casting,machining MOQ:300pcs Product Name: Grey Iron Casting Pump BodyMaterials: grey iron, ductile iron, malleable iron,SG ... chasing ,heat treatment,machining service.6. Manufacturing equipment (foundry used): cupola, electric furnace, resin-bonded, dry sand ... ,normal lathe, line cutter etc.7. Testing equipment (foundry used): elongation tester, hardness tester, metallographic microscope, spectrometer ...