... ProcessPrecision casting, Sand casting, Investment casting, Silicasol castingCasting MaterialCast Iron, Grey Iron, Ductile Iron,Carbon Steel, Stainless steel, Alloy steel, Special steel, Wear ... tester, Roughness tester, deflection tester, Impact test machine, Projector, Altimeter, Scale Micrometer, pressure tester, etc. Quality control: (1) Machinery properties and ...