... alloy steel. OD(max):700mm,Length:8000mm Supply condition: Rough or final machined, normalzied Roller is our main product. Our ... about 3000tons per month. We can do rough machining or final machining for customers' requirement. And we supply our ... generator, high-speed gear case ,low-speed gear case,metallurgy, rolling mill,oil extraction,mining,chemical industry, hydraulic pressure products, port and ...