... :2008 4. OEM offerred Gray iron brake drum Features: 1) Made of grey cast iron 2) We can produce ... drawings1. Company information: We are a professional cast iron manufactuer, and some engineers have over 40 years ... information: Our main products include: i) alloy cast irons, gray iron, Ductile iron parts (G3000, G3500, GG20, GG25, GG30, GG35, ... , and they are warmly welcome. Supply gray iron brake disc