Casting Pulley 1.Material: Cast iron 2.ISO/British standard pulleys: SPZ/SPA/ ... wedge pulleys. 3. V-belt pulley for taper bush, with solid hubs. Standard sheaves, taper bushes sheaves, AK, BK ... treatment: Black oxide, phosphate, painted or passavited. 6. With standardized desigh and well equipped CNC machining systerms. Our pulleys ... 217±0.331534°±0.5°-031538°±0.5° Cast Iron Pulleys with Carburization