Abstract: A flexible tubular conduit for transporting hydrocarbons comprising at least two metal sheathing covers which are separated by a plastic anti-wear layer. Each cover is produced by helically winding a metal longitudinal element. The anti-wear layer is produced by helically winding a plastic material strip. The plastic material comprises an amorphous polymer with a glass transition temperature ranging from 175 to 255° C.

Abstract: A flexible tubular pipe, for example, for the transport of hydrocarbons. The pipe comprises successive independent layers including helical coils of strips or different sections and at least one polymer sheath. At least one of the coils is a strip or strips of polytetrafluoroethylene (PTFE).

Abstract: A flexible tubular conduit for transporting hydrocarbons comprising at least two metal sheathing covers which are separated by a plastic anti-wear layer. Each cover is produced by helically winding a metal longitudinal element. The anti-wear layer is produced by helically winding a plastic material strip. The plastic material comprises an amorphous polymer with a glass transition temperature ranging from 175 to 255° C.

Abstract: A flexible tubular pipe, for example, for the transport of hydrocarbons. The pipe comprises successive independent layers including helical coils of strips or different sections and at least one polymer sheath. At least one of the coils is a strip or strips of polytetrafluoroethylene (PTFE).

Abstract: A flexible tubular pipe for the transfer of fluid in a field of offshore petroleum development. The includes from inside outward an impervious inner polymer sheath, one or more successive reinforcing layers comprising coils of reinforcing wires or metallic strips, or long composite elements and at least one second polymer sheath, comprising at least one of outer protective sheath or an intermediate sheath. The second polymer sheath comprises an elastomeric thermoplastic polymer (TPE).

Abstract: The present invention relates to a reinforced flexible pipeline for conveying an effluent, the pipeline having a sheath (2, 3) of polymer, the internal surface of which is in contact with the effluent and the external surface of which is in contact with reinforcing wires (4) when under pressure. The sheath has an internal layer (2) of polymer or copolymer with no external plasticizer and an external layer (3) of polymer possibly containing plasticizers so as to obtain given mechanical characteristics. Application of the pipeline proposed by the invention for conveying an effluent under pressure and at high temperature.

Abstract: A lagged flexible tubular pipe for conveying fluids, produced by helically winding at least one strip made of thermal insulation around a flexible central core at a uniform pitch and with a gap. Jointly winding gap-free an intermediate extruded section into the gap between the turns of strip and sealing the gap. The intermediate section is made of a material which volume wise is nearly incompressible.

Abstract: Flexible pipe for transporting fluids, comprising, from the inside outwards, a flexible metal carcass with a helical winding of non-contiguous turns, a compressible rod fitted into the gap between the consecutive turns of the helical winding, the compressible rod has a substantial volumetric deformation in compression of at least 50%, an internal sealing sheath extruded over the said metal carcass, at least one ply of armours wound around the said internal sealing sheath and at least one external sealing sheath arranged around the said ply of armours, the rod, its materials, its elastic modules and other features thereof are disclosed.

Abstract: It is of the type comprising at least, from the interior towards the exterior, an internal non-impervious metal carcass (1), the exterior surface of which has interstices (9), an internal impervious polymeric sheath (2), a set of layers of reinforcement wires (3) (4), and an external protection sheath (5), and is characterized in that said internal impervious polymeric sheath (2) mainly comprises a thermoplastic polymer part associating at least two fluoromonomers, at least one of said fluoromonomers carrying at least one alkoxy group, the thermoplastic polymer part being blistering-resistant at a temperature of at least 130.degree. C.

Abstract: The present invention relates to a flexible tubular conduit with a jacket or tube made of crosslinked polyolefin, especially crosslinked polyethylene. The jacket or tube is made from polyolefin crosslinked by hydrolysis.

Abstract: This invention relates to a flexible metal pipe covered with an impermeable sheath of a shrinkable, preferably semicrystalline polymer or polymers, characterized in that it incorporates between the shrinkable polymer sheath and the metal pipe an intermediate elastomer layer (8), optionally vulcanized or reticulated, and/or a TPE in the form of a continuous tubular sleeve (FIG. 3) or of a tape (FIG. 4 to 6). Sheathed pipes of this type are particularly suitable for flexible pipelines, optionally with suitable supports, for carrying oil and gas.

Abstract: This invention relates to a flexible metal pipe covered with an impermeable sheath of a shrinkable, preferably semicrystalline polymer or polymers, characterized in that it incorporates between the shrinkable polymer sheath and the metal pipe an intermediate elastomer layer (8), optionally vulcanized or reticulated, and/or a TPE in the form of a continuous tubular sleeve (FIG. 3) or of a tape (FIG. 4 to 6). Sheathed pipes of this type are particularly suitable for flexible pipelines, optionally with suitable supports, for carrying oil and gas.

Abstract: The present invention relates to a flexible tubular conduit with a jacket or tube made of crosslinked polyethylene, specially crosslinked polyethylene, and a method for manufacturing the conduit. A jacket or tube is made from polyethylene crosslinked by hydrolysis.