| abstract |
In a flexible pipe of multilayer structure with unbonded layers, where the pipe has an interior lining which comprises the following layers:n a) at least one layer of which the material has been selected from the group of polyolefin moulding composition, polyamide moulding composition and polyvinylidene fluoride moulding composition, and also b) at least one layer of which the material is composed of a moulding composition based on a polymer selected from the group of polyarylene ether ketone, polyphenylene sulphide, polyarylene ether ketone/polyphenylene sulphide blend, polyphenyl sulphone and polyalkylene naphthalate,n nthe exterior reinforcement has particularly efficient protection from corrosion due to aggressive constituents which diffuse outwards from the fluid conveyed. The pipe therefore has particular suitability for offshore applications in the production of oil or of gas. |