Method for the production of multi-layer metal composite tubes

Details Method for the production of multi-layer metal composite tubes Method for the production of multi-layer metal composite tubes

B - Operations, Transporting

29

C

B29C 47/02 (2006.01) B21C 37/08 (2006.01)

Patent

CA 2409351

Described is a process for the production of multi-layer metal composite tubes (10), wherein a metal strip is shaped to form a tube (16) and butt-welded along its two longitudinal edges. A plastic inner layer (12) is applied by extrusion in firmly adhering manner to the inside (12) of the metal tube (16) and a plastic outer layer (14) is applied by extrusion in firmly adhering manner to the outside (26) of the metal tube (16).

L'invention concerne un procédé de production de tuyaux composites (10) métalliques multicouches, selon lequel une bande de métal est mise en forme de tuyaux (16) et soudée le long de ses deux bords longitudinaux placés l'un contre l'autre. Sur la face intérieure (22) et sur la face extérieure (26) du tuyau métallique (16) sont appliquées par extrusion, de façon qu'elles adhèrent, respectivement une couche intérieure (12) de matière plastique et une couche extérieure (14) de matière plastique.

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