Roller Material:Carbon steel & alloy steel. OD(max):700mm,Length:8000mm Supply condition: Rough or ... generator, high-speed gear case ,low-speed gear case,metallurgy, rolling mill,oil extraction,mining,chemical industry, hydraulic pressure products, port and ... shaft which are made of nickel molybdenum steel, alloy steel, die steel, stainless steel and carbon steel. The maximum forging shaft size is 12 ...