... , GGG45 3.with machining by CNC 4. powder coating wheel hub, parts for trailer,material grey cast iron GG25 and GGG45 ... ,CAXA, UG, CAD/CAM/CAEDesign and alloy selection flexibility Materials: Stainless steel, carbon steel, alloy steel, heat resistant steelISO9001 approvedProduced by experienced ... , grinding machines and assembly also available. 100x4 cast iron wheel hub