Abstract: The present disclosure relates to a method for producing a rod-shaped element. In order to provide a method with which it is possible to produce a rod-shaped element which overcomes at least one of the disadvantages of the rod-shaped elements known from the state of the art, it is proposed according to the invention that the method has the steps of providing a tube made of a metal, wherein the tube has a longitudinal direction, providing at least one strand with a plurality of threads, wherein at least one of the threads has carbon fibres, introducing the at least one strand into the tube, with the result that the at least one strand extends in the longitudinal direction in the tube, and cold forming the tube, together with the at least one strand, using a forming tool, with the result that an outside diameter of the tube before the cold forming is larger than the outside diameter of the tube after the cold forming.

Abstract: The present disclosure concerns a pipe structure for high-pressure applications. To provide a pipe structure which overcomes at least one of the disadvantages of the pipes known from the state of the art, it is proposed according to the disclosure that the pipe structure has an inner pipe comprising a metal, wherein the inner pipe has an inner surface and an outer surface, at least one strand which surrounds the outer surface of the inner pipe and has a plurality of yarns, wherein at least one of the yarns has carbon fibres, and a protective pipe surrounding the strand and the inner pipe.

Abstract: Tube having a length of more than 10 m suitable for high-pressure applications with internal pressure of 2 bar or more, and which is not afflicted with disadvantages exhibited by tubes produced by conventional drawing or cold pilger milling methods. The tube has a wall thickness equal to or larger than the internal diameter, an axial length of 12 m or more, a tensile strength Rm of 850 N/mm2 or more, and a mean roughness index Ra of the inner wall surface of 0.8 ?m or less. Furthermore, a method of manufacturing such a tube forms a hollow into a tubular intermediate in a first forming step according to the cold forming method, the tubular intermediate thus obtained is annealed, and the annealed tubular intermediate is formed into a tube in a second forming step according to the cold forming method.