name: worm wheel material; 20CrMnTi,20#,45Cr We offer you the ... gear, sprial gear, ring gear, internal gear, sprocket, chain wheel) transmission, gear box, reducer ,shaft and sleeve etc.ApplicationSuitable ... , casting, precision machining and roll forming.MachiningTurning , milling , drilling , grinding , threading , CNC machining, etc.Heat TreatmentAnnealing, normalizing, carbonitriding, carburizing, ...