... Length:8000mm Supply condition: Rough or final machined, normalzied Roller is our main product. Our producing capacity is about ... high-speed gear case ,low-speed gear case,metallurgy, rolling mill,oil extraction,mining,chemical industry, hydraulic pressure products, port and ... shaft, shaft,gear shaft,and stepped shaft which are made of nickel molybdenum steel, alloy steel, die steel, stainless ...