... 2008 4. OEM offer Ductile iron valve body 1. Company information: We are a professional cast iron manufactuer, and some ... Our main products include: i) alloy cast irons, gray iron, Ductile iron parts (G3000, G3500, GG20, GG25, GG30, GG35, ... -NiCuCrl562.1563) , ii) grey high-carbon cast iron iii) high-silicon,high carbon contents (the carbon ... us. Casting process: sand casting ductile iron valve body