Abstract: The invention pertains to the continuous centrifugal casting of metallic and non-metallic tube onto the I.D. surface of a rotating hollow cylinder which acts as the initial mold of the tube forming operation. Molten material, to be cast to tube, is continually introduced into the entrance end of the centrifuge and the solidified centrifugally cast tube is continuously extracted from the exit end. The process is greatly enhanced as to casting rates and ease of extraction of the solid cast tube by the techniques of utilizing a vacuum on the interior of the tube, in its molten and solid state, and/or a positive pressure (above ambient) external to the solidified or partially solidified tube at the exit end of the centrifugal casting machine.