Method of installing at least one pipe line and/or an empty conduit in already laid supply and sanitation pipes, esp. sewer pipe systems, does not affect operation of pipes

摘要

The method involves introducing the pipe line and/or empty conduit (2) into the pipe (1) and attaching it/them to its wall. A tubular inner cladding (3) is inserted and/or pulled into the already laid pipe, whereby at least one flexible empty conduit and/or pipe line is mounted in the region of its outer surface. The flexible cladding is forced against the inner wall of the pipe by a pressure medium. An Independent claim is also included for