Cutting device suitable for tubular metal

The utility model discloses a cutting device suitable for tubular metal. The cutting device comprises a machining table, a large tubular metal original tank body and a plurality of semi-annular outer gear rings. According to the large-scale tubular metal raw tank body cutting device, under the interaction of the machining table, the large-scale tubular metal raw tank body, the semi-annular outer gear ring, the hollow frame, the driving shaft, the long gear, the rotating motor, the servo motor and the opening and closing device, the servo motor can drive the lifting block and the cutting machine on the lifting block to cut the large-scale tubular metal raw tank body; the lifting block can start the rotating motor through the opening and closing device, so that the rotating motor drives the large tubular metal original tank body to rotate, the cutting machine can conveniently and vertically cut the large tubular metal original tank body, and the cut surface is smoother; and the two cutting machines can cut the