Pipe connection system and method for producing such a pipe connection system

The invention relates to a pipe connection system (1) having at least one tubular pipe element (2) and at least one coupling element (3), each having plastic and are connected to each other. Furthermore, the invention relates to a method of manufacturing such a coupling system. In order to enable a wide range of applications, while ensuring a secure connection between the coupling element and the line element, the coupling element (3) an inner component (11) and a coating (12) and the conduit element (2) an inner tube (9) and an outer sheath (10), said coating (12) to the outer shell (10) and the inner tube (9) with the inner component (11) are welded.