Big Size gear ring for wind power, petrochemical industry Features: Big Size gear ring for wind power, petrochemical industryCeritification: TUV, ISO9001 Standards: ... 2000 tons of oil hydraulic press, 3800NC ring-rolling mill and nondestructive inspection equipment as well ... excellent forging parts for different industry like wind turbine shafts, ship shafts, heavy gears, flanges, ring pieces, all ...