... .Surface Treatments: polishing,galvanized,spraying etc. carbon steel forging transmission shaftsDetailed Product Description1.over 11 years OEM ... 4.prompt delivery Item No transmission shaftsMaterialsiron,aluminum,steel,copper,plastic,carbon steel,nylon,bronze,soldder alloy,HSS,tool steels or ... and technical service,mould development and processing etc. carbon steel forging transmission shafts