... iron, grey iron 3. Weight: 0.1-150KGS castings industrial parts 1.Material: ductile iron, grey iron, steel, under ASTM, ... sand casting5.Surface treatment: ballblast, sand blasting, polishing7.Machining service: CNC, lathe, boring mill, milling machine, drilling machine8.Surface finishing: painting ... , welcome to contact us.PRODUCTSMATERIALISO CERTIFICATIONOUR FACTORY castings inducstrial parts