Self-alignment Welding Rotator Double-driving self-alignment welding turning-roll Conventional Rotator Pipe Rotator welding positioner Floor Turntable Positioner welding manipulator H-Beam Automatic Welding Production Line CNC Flame Cutting Machine H-Beam Assembling Machine H-Beam Automatic Welding Machine H-Beam Flange Straightening Machine Edge Milling / Beveling Machine Beam Face Milling Machine Welding Chuck Edge beam automatic welding system plasma welding center plasma welding center Welding Rotator