... casting, Investment casting, Silicasol castingCasting MaterialCast Iron, Grey Iron, Ductile Iron,Carbon Steel, Stainless steel, Alloy steel, Special steel, Wear-resistant steel,Aluminum ... , Projector, Altimeter, Scale Micrometer, pressure tester, etc. Quality control: (1) Machinery properties and Chemical components testing after raw casting(2) Hardness checking ...