Pipeline which can be used especially for transporting fluids and making it possible to limit the permeability to the fluids transported

摘要

A pipeline which can be used especially for transporting fluids and making it possible to limit the permeability to the fluids transported is described. This pipeline comprises the combination of an outer sheath 2 made from composite material, a flexible inner sheath 1 and a metal layer 3 bonded 5 to the said flexible inner sheath over at least most of the width of the said strip. The metal layer comprises at least one layer of flat metal strip wound into a spiral with a winding angle alpha greater than 50 DEG and less than 90 DEG relative to the axis of the pipeline. Application to the petrochemical industry and especially to drilling and production. <IMAGE>