With the needs of urban coal gasification construction, the specifications and varieties of gas pipes have been increasing, and the original pipe cutting machines have not adapted to the needs of production development. We designed and manufactured a multi-type pipe cutting machine (semi-automatic pipe cutting machine). The machine can cut tubes with a diameter of 150~500mm. The machine has been verified by production to meet the design requirements. Reliable and easy to operate. The cutting power part selects the electromagnetic speed regulating motor YCT132-4A,