Tube extrusion lines - Processess

After a presentation, in the previous dossier [AM 3 642] , of the main elements common to standard extrusion lines, the specific features of particular lines are discussed in this dossier [AM 3 643] . The reasons for using special processes lie in the specific characteristics required of the tubes.

For example, for installation pipes (distribution of hot or cold water inside buildings), and particularly underfloor heating pipes, cross-linking provides greater mechanical resistance at higher temperatures.

What's more, since the mechanical strength of pipes depends mainly on their external walls, the use of an expanded or corrugated layer (pipe with a corrugated surface) results in a lighter product requiring less raw material.

Finally, the use of coextruded tubes (made up of several layers) makes it possible to combine the qualities of different materials.