Welding Rotator, Welding Positioner, Welding Column and Boom manufacturer / supplier in China, offering 10ton Hand Screw Welding Rotator for Pipe Welding, 380V/400V Options, Efficient 10ton Hand Screw Welding Rotator for Pipe Welding, 500-3500mm Diameter, Heavy-Duty 10ton Hand Screw Welding Rotator for Pipe Welding, 500-3500mm and so on.