... professional manufacturer of forged rings for Wind tower,Blade,Gears, Ring Gears, Swing Bearings, Shaft ,Cylinder Shaft, Collared Shaft, ... petroleum, chemical industry,ship-building,metallurgy,mining,hydraulic pressure, gear case,port,ship driving mechanism and so on. Annual ... industry, we equipped 3 tons Electro-hydraulic Hammers, 1,250 tons Oil hydraulic Press ect. Advanced equipments, all operated ...