Abstract: A flexible underwater pipe for hydrocarbon transport that includes at least two reinforcement layers separated by a wear-resistant layer of polymeric material, each of said reinforcing layers being produced by helically winding a longitudinal element made of metal or a composite material, said wear-resistant layer being produced by helically winding at least one strip of said polymeric material, the polymeric material including a specific polypropylene homopolymer.

Abstract: The present invention relates to a composite armour (1) for a flexible pipe. Armour (1) comprises a composite profile (2) and a reinforcement tape (5). Composite profile (2) consists of longitudinally oriented reinforcement fibres (4) embedded in a polymer matrix (3). Reinforcement tape (5) consists of a woven tape comprising fibres impregnated with a polymer material, in such a way that the weft thread of the reinforcement tape is orthogonal to the longitudinal direction of the profile, and the warp thread is parallel to the longitudinal direction of the profile.

Abstract: The present invention relates to a flexible pipe comprising a mechanical reinforcement element (4) and a pressure sheath. Mechanical reinforcement element (4) comprises at least one metallic tensile armour layer (6) and at least one composite tensile armour layer (7). Composite tensile armour layer (7) is arranged outside metallic tensile armour layer (6). Separation means (8) are provided to separate composite tensile armours (7), while maintaining a radial clearance and a circumferential clearance for composite tensile armours (7).