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