... (Left/Right, Front/Rear, Up/Down, Rotation, Torch-Twisting, Torch-Lifting). 4. Machine has pipe upper-surface touch-sensor and pipe ... torch according to pipe conditions. 5. Machine has independent torch-lifting axes to make compensation for torch position, which ensures the ... has five groups of rollers to support workpiece. Theres screw lifting device on rollers, easy and stable to adjust. 9. Machine ...