Main Shaft Of Wind Generators 1. Forged,machined,tempering and annealing 2. Inspected by MT,PT,UT,TENSILE,Impact,etc Features: 3MW, 2MW and 1 ... .5MW wind turbine principal shaft Standards: ASTM, ASME, DIN, SIS and EURONORM Certification: TUV, ISO9001: 2000 ... cooperation with Taiwan SinoSteel, Japan's IHI, MH, Nippon Steel, and other famous enterprises . main shaft