Wind Tower Pipe and Vessel Fabrication; Pipe Tubular Prefabrication Production Line; Pile Rack Fabrication Production Line NAEC---- Minimize the outdoor work, Maxmize customer's ... , Rotary Engineering, Petrol Steel, JSL, CNPC, SINOPEC, CNOOC, CNCEC, etc.Wind Tower Pipe and Vessel Fabrication; Pipe Tubular Prefabrication Production Line; Pile ...