... .Available in any size and grade 3.OEM welcomed 4.Application:transmission part and machinery ... hobbing, high frequency quenching,4. Material: C45, A3, cast iron, stainless steel5. Surface treatment: Oxide black, galvanization ... America, Europe, Oceania, Middle Ease, AfricaMaterialC45,A3, cast iron, stainless steel, copper etcManufacturing methodweleded or forgedHeat ... +plywood case/Pallet sprocket wheel