... 3)steel shaft as per customer's request Product Gear shaftsCertificateISO9001 :2000MaterialCarbon,alloy or stainless steel as you requestTechnicsFree ... , such as forging shaft, forging rings, forging flange, gear shaft, gear rings, cast forgings, etc., especially there are special requirements ... quality assurance system will conduct throughout the entire production . Gear shafts - speed reducer