... 1.Cast iron&cast steel,bronz,Aluminiu 2.ISO9001:2000 3.Sand cast,lost wax ... )Electric-furnace smelting OEM serviceMaterial: gray iron, ductile iron, carbon steel, stainless steel, alloy steelProcess: sand casting ,investment casting ,die casting and ... ,ASTM ,DIN ,JISWeight range: 5g-20ton Quality control:(1) Machinery properties and Chemical components testing after raw casting(2)Hardness checking ...