Abstract: The invention concerns a method for the manufacture of individual pipe sections of a pipe formed by a product pipe having at least one channel running along the product pipe. Surrounding the product pipe and the channel is a pipe jacket filled with an insulating mass which exhibits a flowability only in the processing condition. The channel running along the product pipe is formed by the outline of a core of material in place during addition of the insulation.

Abstract: The invention concerns a method for the manufacture of individual pipe sections of a pipe formed by a product pipe [(1) and by] having at least one channel [(5)] running along the product pipe. The channel is formed by filling a pipe jacket with an insulating mass which exhibits a flowability only in the processing condition. The pipe jacket contains the product pipe and a core which is disposed on the product pipe and which defines the contour of the channel. [(1), in which case the product pipe (1) and the channel (5) are fitted with the insulation (3) enclosed by the jacket pipe (2). A method consisting of the following process steps is proposed to provide a simple and cost-effective manufacture of almost any type of channel along the product pipe (1).