... high quality CNC machining copper/cast iron/steel astm spare parts---On promotion OEM castingAccording to the ... sand casting, shell Casting, die castingOur Materialstainless steel, carbon steel, low alloy steel, ductile iron, gray cast iron, aluminum ... OEM serviceMaterial: iron, gray iron, ductile iron, steel, stainless steel, carbon steel, alloyProcess: sand casting, investment casting, die casting ...