... Cast iron 2.ISO/British standard pulleys: SPZ/SPA/SPB/SPC 3.MPTA standard pulley 4.OEM ... so on. 2. Pilot bore, taper bore Pulleys(SPA, SPB, SPC AND SPZ), adjustable pulleys, multi ... pulleys. 3. V-belt pulley for taper bush, with solid hubs. Standard sheaves, taper bushes sheaves, AK ... : Black oxide, phosphate, painted or passavited. 6. With standardized desigh and well equipped CNC machining systerms. Our ...