... forged shafts, heavy shafts,large shaft forging 2,materials: carbon,stainless,alloy steel 3,proces: hot forging 4,certificates: ISO9001-2000,GL,Product ... InstallationStandardEN GB ASTM DIN JIS ISOMaterialSteel Plate, Hot Rolled Steel Section, Stainless Steel etc.Material QualityS355,S275,S235,Q235,Q345,Q390 etc ... -T2)Magnetic Testing Standard: ASTM A125,ISO 4986 wind turbine rotor forging