1.wheel hub, parts for trailer 2.cast iron material GG25, GGG45 3.with machining by CNC 4. powder coating wheel hub, parts ... for trailer,material grey cast iron GG25 and GGG45 ... 8,000MT per year Perfect test abilityCNC Machining:CNC lathes, milling, drilling, planning, grinding machines and assembly also available. 100x4 cast iron ...