Patent ID: 8291940

Claim:
Flexible conduit pipe for transporting fluids comprising: two corrugated metallic tubes, an inner tube and an outer tube, which are arranged concentrically to one another and are separated from one another by an encircling annular space in which a spacing means is arranged, wherein the spacing means has a plurality of rings, each of which have a basic body that bears against both an outer surface of said inner tube and an inner surface of said outer tube, said rings being arranged at an axial distance from one another in the annular space, the rings have on their inner circumferential surface a rib which extends in the circumferential direction, corresponds to and engages a corrugation trough of the outer surface of said inner tube; and at least three projections are provided on at least one ring of said plurality of rings on its basic body, said projections offset from one another in the circumferential direction, protrude radially outwards and engage in, during said production of said corrugations of said outer tube, a corresponding corrugation trough on said inner surface of said outer tube, such that said pressing of said spacing means into said corrugations of said outer tube prevents relative axial movements between said inner tube and said outer tube of said flexible conduit pipe.