Novel plasma circular tube cutting machine

The utility model provides a novel plasma circular tube cutting machine which comprises a workbench which is placed on the ground and used for supporting, a plurality of sliding rails are arranged on the upper end face of the workbench, a moving box which can slide on the sliding rails and is used for fixing workpieces is arranged on the sliding rails, a bracket used for supporting the workpieces is arranged on the workbench, and the bracket is used for supporting the workpieces. The upper end face of the bracket is provided with balls in contact connection with a workpiece, a support is fixedly arranged on the workbench, a gun head used for cutting the workpiece is arranged on the support, the bracket and the workbench are fixed through bolts, the bracket is in a V shape, an opening of the bracket faces upwards, and two hollow cavities are formed in the upper end face of the bracket and used for containing the balls. The round pipe cutting device has the advantages that the round pipe cutting can be realized