... South Africa. Applications of Forged ShaftsWind Turbine : Turbine Rotor Shaft, Turbine Blade, Valve, Bush and Casing BoltGas Turbine: Compressor Disc, Turbine Disk ... , Spindle Bolt and Compressor BladeNuclear Power : Casing, Coupling, RPV Stud Bolt ... Standard:GB, BS, ASTM, EN, DIN, AISI, JIS Forged Shafts of 42CrMo4/4340