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Self Aligning Vessel Pipe Welding Rotators with Siemens Motor Quick Detail: The self- align/adjusting rotator is suitable for circular pipe/tank/vessel welding; The distance between wheels can be adjustable by it self. There are several specifications for customer choice; we also can special design according to customer’s requirements. Description: Welding rotator can be auto adjusted according to the size and weight of cylinder, VFD rotary speed control, improving the