Abstract: A tubular conduit for the transport of fluids under pressure includes a flexible outer tubular sheath, a group of stiffening reinforcements, a flexible inner tubular sheath or tube, and if applicable at least one intermediate flexible tubular sheath, and a heater in the form of electrically conductive wires, connected to an electric power source and releasing heat by Joule effect, said wires being arranged on the length of the conduit. Also a plurality of electrically conductive wires are arranged in at least one layer in which the wires are parallel to one another and spirally wound around the axis of the conduit, the layers of conductive wires being placed between two flexible tubular sheaths of the conduit, the conductive wires being noncontiguous to one another and each resting by surface contact on the underlying tubular sheath.

Abstract: A flexible pipe with improved thermal protection in which a fluid is liable to flow under pressure and comprising at least one tightness sheath or tube of polymeric material, at least one reinforcement therein further comprises as thermal protection, a sheath of composite material comprising cork granules and a flexible metal tube which is disposed outside said sheath of composite material. Application notably to flexible pipes for oil installations.