... and 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 ... Standard:GB, BS, ASTM, EN, DIN, AISI, JIS Forged Shafts of 42CrMo4/4340