Rotation tool used for end welding

The utility model provides a rotation tool used for end welding, wherein a V-shaped stabilizing seat is installed on a face of a welding table; a small boss is connected in the center of the bottom surface of the welding table and installed in an rolling beating inner hole, a rolling bearing outer cover is installed in a center column of a rotating base, and a balance supporting frame is connected with the lower end of the center column of the rotating base. The rotation tool used for end welding can increase a machining speed of end welding (a welding process needs intermittent welding); the requirement, for the intermittent welding in the welding process, of an end can be met; after one end is welded, the rotation tool does not need demounting, the end is replaced by another end, the rotation tool is directly rotated, then next end is welded, and the intermittent welding is conducted in an alternating mode. The rotation tool used for end welding has the advantages of being practical and convenient to use, r