Round pipe making machine

The utility model discloses a round pipe making machine which comprises an installation base, a rolling forming device and a welding seam device. Wherein the mounting base is provided with a working platform; the rolling forming device is arranged on the working platform and comprises a steel belt bending mechanism and a round pipe forming mechanism which are sequentially arranged, the steel belt bending mechanism comprises a plurality of bending assemblies which are sequentially arranged, the bending assemblies are used for bending a steel belt, and the round pipe forming mechanism comprises a plurality of pressing assemblies which are sequentially arranged. The pressing assembly is used for pressing the bent steel belt into a pipe body; the welding seam device is arranged on one side of the rolling forming device and used for welding seams of the round pipes. The circular tube making machine provided by the utility model can be used for continuously processing, can be used for forming a circular tube at one