Pipe cutting device

The utility model discloses a pipe cutting device, which is characterized in that the pipe cutting device comprises a numerical control cutting device and a roller carrier linkage device, the roller carrier linkage device comprises a plurality of groups of roller carriers which are sequentially arranged along the same linear direction, and each roller carrier comprises a roller support and supporting rollers which are respectively arranged on two sides of the top of the roller support; the numerical control cutting device is arranged outside the roller carrier linkage device and comprises a linear guide rail, a movable base movably arranged on the linear guide rail, a numerical control host and an electric lifting plasma gun cutting mechanism arranged on the movable base, and the numerical control host is connected with and drives the electric lifting plasma gun cutting mechanism. The electric lifting plasma gun cutting mechanism comprises a fixing support and a plasma gun suspended on the fixing support, and