PROCESSO PARA A PRODUCAO DE TUBOS DE METAL COMPOSITOS DE MULTIPLAS CAMADAS

摘要

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).