| abstract |
Process for producing pipe lined with pipe. The present invention relates to a pipe whose inner surface has been coated with a thermoplastic layer which is produced by a process comprising the following a) a pipe is provided, b) a pipe made of a thermoplastic material is provided, c) the pipe cross section is optionally reduced by exposure to an outside force, d) the pipe is introduced into the pipe, e) the pipe is heated outside to a temperature that is higher than the melting point. crystalline molding of the tubing outer surface molding composition, during or after the introduced tubing is radially expanded so that its outer surface assumes the inner shape of the tube, f) the tubing is cooled and thereby fixed. In this way, relative movements between the piping and the conduit pipe are also avoided; In addition, the risk of pipe collapse is low. The pipe is used for the production of an installed pipe. |