Pipe Welding Rotator, Automatic Welding Positioner for Cylinder and Flange 1-Metric-Ton Stable Welding Roller Stand (200 Rollers) Weight: Approx. 65 kg Construction: One drive frame + one driven frame, red polyurethane rollers, matching control box, stepless speed control, pipe and cylinder welding rotation fixture, maximum load capacity of 1 metric ton 1-Metric-Ton Heavy-Duty Interlinked Roller Stand (250 Rollers) Weight: Approx. 72 kg Construction: 250mm-diameter polyurethane rollers, reinforced frame, synchronized speed control, suitable for pipe diameters 20–800mm 1-metric-ton Heavy-Duty Synchronized Digital Display Roller Stand Weight: Approx. 80 kg Construction: Control box with digital display showing rotational speed, forward/reverse operation, and variable-frequency speed control; reinforced base 1-metric-ton Heavy-Duty Interlinked Digital-Display Roller Stand + Floor-Mounted Welding Torch Stand Weight: Approx. 125 kg Construction: Based on the digital display roller stand, this model includes an additional vertical welding gun adjustment bracket that secures the welding gun to enable automatic circumferential welding 3-metric-ton Stable Variable-Frequency Roller Stand Weight: Approx. 150 kg Construction: Self-adjusting synchronized rollers, variable-frequency drive, heavy-duty steel plate frame, maximum load capacity of 3 metric tons, compatible with workpiece diameters of 70–1200 mm