Cutting support for medium and large pressure pipelines and branch pipes

The utility model relates to a medium-large pressure pipeline and branch pipe cutting support, and belongs to the technical field of pipeline cutting. The cutting machine comprises a circle center positioning device, a connecting device, a cutting machine supporting device and a transmission device, the circle center positioning device is arranged on the transmission device, the length of the circle center positioning device can be adjusted, the connecting device is rotatably arranged on the transmission device, and the cutting machine supporting device is connected to the connecting device. The length of the cutting machine supporting device can be adjusted; due to the adoption of the circle center positioning device and the cutting machine supporting device, the circular seam cutting device can be suitable for cutting irregular circular seams, can avoid magnetic blow-off during subsequent welding, is simple in structure, convenient to operate and low in manufacturing cost, and has good social and economic b