... .OEM allowed Introduction:1. We are professional manufacturer for lots of pulleys, such as V belt pulley, ... pulleys, multi wedge pulleys. 3. V-belt pulley for taper bush, with solid hubs. Standard sheaves, taper ... 45C. GG25, GGG40, Aluminium, etc. 5. Surface treatment: Black oxide, phosphate, painted or passavited. 6. With standardized desigh and ... 5° Casting V-Belt Steel Pulleys with Black Coating