CB-1P Plasma Circle Burner, for cutting beveled holes in lightwall pipe or vessels with wall thicknesses up to 5/16" (7 mm). This machine is supplied with a Thermal Dynamics air plasma power source, torch and 50 (15 m) ......CB-1P Plasma Circle Burner, for cutting beveled holes in lightwall pipe or vessels with wall thicknesses up to 5/16" (7 mm). This machine is supplied with a Thermal Dynamics air plasma power source, torch and 50 (15 m) leads. The unit operates on 220/50-60/1 power (3 phase also available). The CB-1P must be mounted on a carriage or fixture.