Abstract: High-pressure flexible pipe, comprising an inner liner and a tape, wrapped around and bearing against the inner liner, wherein the tape comprises a polymer matrix and a plurality of pultruded elements embedded in the polymer matrix, wherein the pultruded elements each comprise a plurality of elongated filaments covered by polymer resin.

Abstract: A high-pressure pipe comprises an inner liner (1), an outer coating layer (6) and a reinforcement layer (2, 5) positioned between the inner liner and the outer coating layer. The reinforcement layer has helically wound strips (2, 5) which each comprise a matrix (4) and fibers (3) embedded in the matrix; the fibers consist of a multitude of twisted high-strength filaments. With an aim of providing a relatively high bending flexibility, the filaments of a fiber are sized filaments obtained by subjecting the filaments to a sizing operation.

Abstract: A high-pressure pipe comprises an inner liner (1), an outer coating layer (6) and a reinforcement layer (2, 5) positioned between the inner liner and the outer coating layer. The reinforcement layer has helically wound strips (2, 5) which each comprise a matrix (4) and fibers (3) embedded in the matrix; the fibers consist of a multitude of twisted high-strength filaments. With an aim of providing a relatively high bending flexibility, the filaments of a fiber are sized filaments obtained by subjecting the filaments to a sizing operation.

Abstract: A high pressure pipe of high density polyethylene material includes an internal lining (3), an intermediate reinforcement layer (2) and an outer cover layer (1). The high density polyethylene material of the internal lining (3) is filled with a filling material (5). As a result, the mixture of high density polyethylene and filling material provides resistance against higher temperatures, allowing the pipe to be able to transport fluids at elevated temperatures.

Abstract: A high pressure pipe of high density polyethylene material includes an internal lining (3), an intermediate reinforcement layer (2) and an outer cover layer (1). The high density polyethylene material of the internal lining (3) is filled with a filling material (5). As a result, the mixture of high density polyethylene and filling material provides resistance against higher temperatures, allowing the pipe to be able to transport fluids at elevated temperatures.

Abstract: A connecting structure includes a high-pressure line having a load-bearing shell and a sealing inner cladding, as well as a coupling, which coupling includes a flange section having a ring part and a flange which extends radially outwards with respect to the ring part, a connecting element by which the load bearing shell of a pipe is connected to the flange section, as well as a sealing element which the inner cladding of the high-pressure line is connected to the flange section, which sealing element end in the free end of the flange section which is turned away from the high-pressure line. The sealing element includes a sealing sleeve which is situated between the inner cladding of the pipe and the ring part of the flange section.

Abstract: A method for handling a fiber reinforced tube the tubular wall of which has a stiffness which allows the tube to maintain a nominal circular cross section of its own, the tube including a liner, a fiber reinforcement surrounding the liner and a coating surrounding the fiber reinforcement, includes the steps of: flattening the tube so as to obtain a non-circular shape, such as an oval or elliptical shape, subsequently winding the flattened tube onto a reel. Thanks to the method, a combination of a wound flattened tube and a reel is obtained which is fit for road transport.

Abstract: A method for handling a fiber reinforced tube the tubular wall of which has a stiffness which allows the tube to maintain a nominal circular cross section of its own, the tube including a liner, a fiber reinforcement surrounding the liner and a coating surrounding the fiber reinforcement, includes the steps of: flattening the tube so as to obtain a non-circular shape, such as an oval or elliptical shape, subsequently winding the flattened tube onto a reel. Thanks to the method, a combination of a wound flattened tube and a reel is obtained which is fit for road transport.

Abstract: A method for providing a wound up fiber reinforced tube includes the steps of: manufacturing a fiber reinforced tube by: providing a plastic inner liner (1), subsequently providing a reinforcement layer (2) around the liner, subsequently providing a coating layer (3) around the reinforcement layer, winding the manufactured fiber reinforced tube onto a reel, characterized by providing a shear connection element (4) between the liner (1) and the reinforcement layer (2).

Abstract: A coupling construction includes a coupling (1) and at least one high-pressure pipe (2) connected to the coupling. The high-pressure pipe includes an external revetment layer (3), a reinforcement layer (4) as well as an internal liner (5). The coupling furthermore includes a load transfer element (9, 10) which engages the external revetment layer (3), as well as a sealing (6, 14) which engages the liner (5). The reinforcement layer (4) includes a braided material (7, 8) whereby the external revetment layer (3) engages the braided material (7, 8) in such a way that shear forces can be transferred in a reliable way. A further advantage is that the load transfer element (9, 10) of the coupling (1) is positioned only on the outside of the pipe (2), as a result of which the internal volume of the pipe is free of flow restrictions.

Abstract: A coupling construction includes a coupling element and at least one high-pressure pipe, the high-pressure pipe including an external sheathing layer, a reinforcement layer and an internal lining. The coupling includes an internal welding sleeve, the external surface of which bears a helically wound heating element, as well as a force transfer element that acts cooperatively with the reinforcement layer. The heating element includes a heating wire and a shell encompassing the heating wire. The welding sleeve and the sheathing layer are fused by material originating from the welding sleeve, the sheathing layer and from the shell encompassing the heating wire. A welding sleeve for use in the coupling construction, as well as a method for producing a coupling construction are disclosed.

Abstract: The present invention relates to a connecting construction between a pipe and a coupling, which pipe comprises an internal lining and a fibre reinforcement layer surrounding the lining. The coupling has a coupling piece having an external clamping surface, a sleeve which surrounds the coupling piece and has an internal clamping surface which is shaped in accordance with the external clamping surface of the coupling piece, and also a coupling end interacting with the coupling piece. The fibre reinforcement layer is secured between the coupling piece and the sleeve. The sleeve has a mount which is remote from the coupling end and the internal support surface of which extends so as to widen in the direction away from the coupling end.

Abstract: This invention relates to a connecting structure comprising a high-pressure line having a load-bearing shell and a sealing inner cladding, as well as a coupling, which coupling comprises a flange section having a ring part and a flange which extends radially outwards with respect to the ring part, a connecting element by which the loadbearing shell of a pipe is connected to the flange section, as well as a sealing element which the inner cladding of the high-pressure line is connected to the flange section, which sealing element end in the free end of the flange section which is turned away from the high-pressure line. The sealing element comprises a sealing sleeve which is situated between the inner cladding of the pipe and the ring part of the flange section. The present invention also relates to a coupling for a high-pressure line.

Abstract: The present invention relates to a connecting structure between a pipe and a coupling. The pipe has an inner lining and a fibre-reinforced layer surrounding the lining. The coupling has a coupling piece having an outer wedge-shaped surface, a sleeve surrounding the coupling piece, the inner surface of which sleeve is formed to match the outer wedge-shaped surface of the coupling piece, as well as a coupling end which interacts with the coupling piece. The fibre-reinforced layer is accommodated between the coupling piece and the sleeve and is clamped inbetween. The outer surface of the coupling piece has at least two portions with different wedge angles and the inner surface of the sleeve has two correspondingly formed portions with different wedge angles.

Abstract: A pipe for transporting a pressurised medium comprises a plastic pipe body (1) as well as reinforcement (2-4) extending in the circumferential direction thereof for absorbing the tensile forces arising as a consequence of the overpressure, which reinforcement is constructed as a strip of plastic material (2) containing a series of wires (3) of a relatively high tensile strength and/or rigidity, which wires extend alongside one another in the longitudinal direction of the strip of plastic material, which strip of plastic material containing wires is wound spirally with respect to the plastic pipe body. The reinforcement comprises steel wires, preferably a series of steel wires encased by the strip of plastic material.

Abstract: A reinforced pipe for transporting a fluid comprising aggressive gases and/or liquids, such as wet natural gas, comprising a plastic inner pipe and, surrounding the inner pipe, a reinforcing layer with fibres which have a high tensile strength, such as aramid fibres or fibres made from steel with a high carbon content. A barrier layer, which is impermeable or of low permeability to the fluid, is located between the inner pipe and the reinforcing layer, which barrier layer is stuck so that it rests completely against the inner pipe.