Abstract: A duct includes: a tube that is formed to extend from an indoor of a building or a movable body and that allows an outside and the indoor to communicate with each other; an electromagnetic wave inhibiting sloped surface that is formed on an inner surface of the tube and extends to be sloped to approach an axial line of the tube from the outside toward the indoor in an axial direction of the tube and that reflects an electromagnetic wave; and an electromagnetic wave selecting inner peripheral member that has a tubular shape covering the electromagnetic wave inhibiting sloped surface from an inner peripheral side and is capable of selectively transmitting only an electromagnetic wave of a specific frequency incident on the tube.

Abstract: A connection duct has (i) a duct body that is made of a material having great flexibility, the duct body in which the conditioned air flows and (ii) core members that are made of a material having higher rigidity than the duct body and are arranged, in the duct body, along a flow direction of air, the core members that maintain a cross-sectional shape of the duct body at a specified cross-sectional shape. The core members respectively have (i) an outer plate that is located on an outer peripheral side in the curved portion, (ii) an inner plate that is located on an inner peripheral side in the curved portion, and (iii) a connection plate that connects the outer plate with the inner plate. A length of the outer plate in the flow direction is longer than a length of the inner plate in the flow direction.

Abstract: A thermal sleeve for protecting an electronic member connected to a wiring harness, assembly therewith and method of construction are provided. The thermal sleeve includes a tubular heat-settable nonwoven inner layer having a generally cylindrical portion and an outer surface extending along a longitudinal central axis between opposite open ends. A reflective outer layer is disposed about the outer surface. At least one finger of the heat-settable nonwoven inner layer extends radially inwardly from the generally cylindrical portion. The at least one finger is heat-set to remain extended radially inwardly absent an externally applied force thereon. The at least one finger has a free end surrounding a through opening sized for receipt of the wiring harness.

Abstract: Flexible pipe body for transporting fluids from a sub-sea location, including a carcass layer comprising a plurality of independent hoop elements each comprising a body portion having a circular outer surface that circles around an inner circumference of a bore region of the flexible pipe, said body portion being arranged to interlock adjacent hoop elements together. A method of manufacturing flexible pipe body is also enclosed.

Abstract: A transfer hose is configured having multiple layers and contains at least one inner layer and one transfer layer, wherein the transfer layer is structured from at least 20 wt % of polyphenylensulfide (PPS) and/or polyoxadiazole (POD) and/or aramide (AR) and/or polyimide (PI) and/or polyether ether ketone (PEEK) and/or polyethylene-2,6-naphthalate (PEN) and/or polyphenylene (PPP) and/or polyphenylenoxide (PPO) and/or polyphenylensulfide (PPS) and/or polyphenylenether (PPE) and/or polybenzoxazole (PBO) and/or carbon fibers (CF) and/or metal fibers (MF). The hose-shaped article is in particular a turbocharger hose.

Abstract: A fiber optic adapter module is disclosed. The fiber optic adapter module includes a molded one-piece housing including a first end and a second end, the housing including a plurality of passages extending from the first end to the second end, each passage configured to interconnect two cables terminated with fiber optic connectors. The housing is movably mounted on a fixture, wherein the module is movable relative to the fixture along a line of travel that is non-parallel to longitudinal axes of the openings.

Abstract: A flexible conduit for transporting abrasive slurry, includes a flexible tubular body, such as rubber tube, and a plurality of wear-resistant rings provided in the body along the length of the conduit for protecting the inner surface of the body against abrasive action of the slurry, wherein at least one ring of the plurality of rings includes an indentation for engaging the tubular body in a form closed manner, and wherein the indention is arranged with the ring such that radial movement of the ring with respect to the conduit is prevented.

Abstract: The invention relates to an unbonded flexible pipe for offshore applications. The pipe comprises an inner sealing sheath defining a bore and at least one armoring layer comprising metal, wherein the metal of the armoring layer is manganese steel with a composition comprising in mass % of the total steel composition about 9-30% manganese (Mn) about 1-4% aluminum (Al) about 0-6% silicium (Si) about 0-4% copper (Cu) about 0-4% nickel (Ni) about 0-1% carbon (C) the remainder is iron and impurities.

Abstract: A technique utilizes micro-coil which is formed as a composite to enable use at substantial depths and/or with substantial flow rates. The micro-coil is formed as a tubing with a multi-layered tubing wall. The composite tubing wall provides substantial strength and longevity which allows deployment of the micro-coil in a much wider variety of well treatment applications, such as applications having substantial flow rates and/or applications at substantial well depths.

Abstract: A tubular structure having a multi-layer, strength-enhanced first end segment, a multi-layer, strength-enhanced second end segment, and a flexible segment intermediate said multi-layer strength-enhanced first end segment and said multi-layer, strength-enhanced second end segment is provided. Methods for manufacturing tubular structures are also provided.

Abstract: An annular duct insulation structure includes a substantially rigid annular insulation-retaining insert having a substantially cylindrical outer surface. A viscoelastic insulation foam layer is disposed around the substantially cylindrical outer surface of the insert so as to result in a composite insulation structure of the foam layer and the insert. The foam layer is formed of at least one of (A) a compressed open-cell foam layer or (B) a compressed closed-cell foam layer in which at least a portion of the closed cells has been opened, wherein the foam layer has been compressed sufficiently to permit the composite insulation structure to be slipped into an annular duct without substantial friction, and wherein the foam layer decompresses so as to substantially fill a void between an inner surface of the duct and an outer surface of the foam layer of the composite insulation structure.

Abstract: The disclosure relates to a flexible underwater pipe intended for transporting fluids, in particular hydrocarbons, comprising at least one layer comprising a polymer resin comprising surface-modified titanium dioxide nanoparticles bonded to the polymer by a covalent and/or hydrogen bond.

Abstract: The invention relates to a method of producing a flexible pipe comprising a metal carcass and an internal sealing sheath extruded onto the carcass, said 5 method comprising providing a metal carcass; heating an application section of said carcass, preferably using induction heating, to an application section temperature of at least 150° C.; extruding a non-cross-linked polyethylene material comprising a peroxide having an activation temperature above 150° C. onto said application section of said carcass; cross-linking the extruded 10 polyethylene in a cross-linking zone by raising its temperature to at least the activation temperature of said peroxide by exposing the extruded polymer material to electromagnetic waves, with a wavelength of between 0.5 ?m to 0.5 m, preferably infrared radiation; and cooling said cross-linked polyethylene material to obtain the internal sealing sheath.

Abstract: There is disclosed an animal-resistant tubing system. The animal resistant tubing system may include a flexible tube disposed within a coil shield, the coil shield having an uncompressed length longer than a length of the flexible tube. The coil shield may have an inside diameter larger than an outside diameter of the flexible tube. The entire length of the coil shield may be free to move radially, axially and rotationally about the flexible tube except that the first and second fittings may prevent the coil shield from moving axially beyond the ends of the flexible tube, such that the length of the coil shield is compressed between the first fitting and the second fitting.

Abstract: A metallic tubular structure having an inner surface providing a passage for conveying fluid or vapor, an outer surface, a multi-layer, strength-enhanced first end segment, a multi-layer, strength-enhanced second end segment, and a flexible segment intermediate the multi-layer, strength-enhanced first end segment and the multi-layer, strength-enhanced second end segment, the metallic tubular structure comprising: a first inner metallic tubular member, the inner surface thereof providing a fluid- or vapor-conveying passage for conveying fluid or vapor therethrough, the first inner metallic tubular member longitudinally extending the entire length of the metallic tubular structure, the first inner metallic tubular member comprising one or more metallic layers; a second metallic tubular member circumferentially disposed on the outer surface of a first end of the first inner metallic tubular member, the second metallic tubular member longitudinally extending a predetermined distance on the first inner metallic tu

Abstract: The invention relates to a method for evaluating the fatigue life of a polymer composition, including the following steps: i) providing a polymer composition; ii) manufacturing a plurality of axisymmetric test tubes cut from said composition; iii) subjecting said test tubes to a uniaxial traction fatigue test including a plurality of loading and unloading cycles for the test tube, the geometry of the test tube making it possible to subject the material to triaxial stresses, in the area of the test tube cut, simulating the stress conditions for the pressure sheath of a flexible pipe, particularly for off-shore use; and iv) predetermining the number of cycles until the rupture of said polymer composition. The invention is related to the use of said polymer composition selected through the predetermining method for manufacturing pipes or conduits to convey a pressurized and/or corrosive fluid.

Abstract: The disclosure pertains to installing a plurality of tear cords between a metal tube and a protective jacket. The multiple cords facilitate ease of removal of the protective jacket by creating a panel of the jacket that is detached from the remainder by pulling on the multiple tear cords. The resulting widened space can be used to remove the tube from the remaining protective jacket. The jacketed tubes may be used in a hydrocarbon production downhole well bore. The tubes may be used to furnish hydraulic fluid or chemicals into the well bore. The contents may be pressurized or under vacuum. The jacketed tubes are hermetically sealed. The tubes, which may be 1 inch in diameter, are joined using compression fittings. Tear cords are used to facilitate removal of the protective jacket without damage to the tube surface thereby facilitating the placement of compression fittings and maintaining the integrity of the tube wall.

Abstract: The invention relates to a use of a duplex steel for the production of an armouring layer of a flexible pipe comprising at least one unbonded armouring layer and at least one unbonded sealing layer wherein the duplex steel comprises in weight percent 0.01-0.05% by weight of carbon (C) at least 0.15% by weight of nitrogen (N) 20.0-23.0% by weight of chromium (Cr) up to 3.0% by weight of nickel (Ni) up to 1.0% by weight of molybdenum (Mo) 3-6% by weight of manganese (Mn) up to 1.0% by weight of copper (Cu) incidental impurities and balance being iron (Fe).

Abstract: The invention relates to the use of a composition that contains from 70 to 91 wt % of at least one semi-crystalline polyamide, from 5 to 25 wt % of a polyolefin having an epoxy, anhydride or acid function introduced by grafting or copolymerization, and from 4 to 20 wt % of a plasticizer in the production of flexible pipes used in the exploitation of crude oil or gas deposits under the sea that comprises at least one layer obtained from such a composition.

Abstract: A composite hose with a corrugated metal tube has a hose body having a corrugated metal tube and an outer layer. The corrugated metal tube includes a non-corrugated straight-walled portion on an end portion thereof, and a rigid insert pipe is inserted in the straight-walled portion. A socket fitting is fitted on the hose body by being swaged thereon radially inwardly, and an inner circumferential end portion of the collar portion and an outer circumferential surface of the insert pipe compress an extending portion of the straight-walled portion to fix the straight-walled portion onto the insert pipe and provide a seal between the outer circumferential surface of the insert pipe and an inner circumferential surface of the straight-walled portion. A fracture preventing mechanism is provided on a hose end portion for preventing fracture of the straight-walled portion.

Abstract: In one embodiment, a system can include a centralized storage module, for example a database, that stores data relating to petroleum, natural gas and other related products taken from several different sources and entities. The entity storing and maintaining this data can be an entity independent from the operators, producers and/or other working interests. This system can use automated techniques to reconcile distributions to all entities associated with a well due to the removal of a mineral, for example, petroleum, natural gas and/or other related products, from that well, on a periodic basis. These automated techniques include, for example, reconciling all agreements associated with the well, reconciling the amount of mineral removed at the well, reconciling the spot market price associated with the well at the time of removal, automating approval by the removing entity, automating payment and the like.

Abstract: The disclosure pertains to installing a tear cord between a metal tube and a protective jacket. The jacketed tubes may be used in a hydrocarbon production downhole well bore. The tubes may be used to furnish hydraulic fluid or chemicals into the well bore. The contents may be pressurized or under vacuum. The jacketed tubes are hermetically sealed. The tubes, which may be 1 inch in diameter, are joined using compression fittings. Tear cords are used to facilitate removal of the protective jacket without damage to the tube surface thereby facilitating the placement of compression fittings and maintaining the integrity of the tube wall.

Abstract: The invention concerns a flexible tube (1) comprising a corrugated pipe (2) around which are mounted a pressure resistant braid (9) of tubular shape made of an adapted material as well as an outer tubular mechanical protection (13). The invention is characterized in that it comprises a tubular antifriction braid (6) arranged between the corrugated pipe and the pressure resistant braid, said antifriction braid being made of an adapted material whereof the hardness and/or the friction coefficient are lower than those of the material used for making the pressure resistant braid and at least one tubular damping layer (12) arranged between the pressure resistant braid and the outer mechanical protection.

Abstract: The invention relates to flexible pipes for transporting cryogenic gas in liquefied form. The pipe is of composite form and comprises an inner pipe adapted to withstand pressure loads and cryogenic temperatures, an outer pipe adapted to withstand tensile axial forces, and a layer of insulating material (34) interposed between the inner and outer pipes. The inner pipe is defined by a hollow carcass (10) formed from a helical interlocked metallic strip (12), the internal and external surfaces of which are lined with a fluid-pressure containment sheath (32) of fully fluorinated fluoroplastic. The insulating layer (34) acts to maintain a temperature differential between the respective pipes. Adjacent portions of the strip (12) in the carcass (10) are moveable relative to each other to provide flexibility to the pipe along its length.

Abstract: The flexible insert for tubing includes an insert for water service tubing or the like that prevents the formation of stress cracks on the tubing when using a compression fitting. The insert is formed, at least in part, from an elongated, resilient, helical coil having opposed first and second ends. In one embodiment, the coil terminates in an enlarged turn or loop at one end of the coil that serves to retain the coil in the tubing. In another embodiment, the coil is butt welded to one end of a short, rigid sleeve having an annular flange at the opposite end. The insert also includes an O-ring and a compression nut.

Abstract: The present invention relates to fluid conduit (1) suitable for use in the transportation of working fluids to a wellhead or the like from a topside location or the like. The fluid conduit (1) is suitable for use in a multi-conduit umbilical. The conduit comprises an inner flexible collapse resistant hose (2) surrounded by a hose liner (4), and at least one pair of helically contra-wound high tensile wires (6a, 6b). Each turn of each wire (6a, 6b) is in substantially close contact with adjacent turns thereof. A multi-conduit umbilical comprising a plurality of the fluid conduits bundled together and provided with an outer sheath is also described.

Abstract: A composite hose is constructed to have an outer peripheral portion and an inner peripheral portion. The outer peripheral portion includes an elastic layer and a reinforcing layer provided on an outer periphery of the elastic layer. The inner peripheral portion includes a corrugated metal tube which is provided with a corrugated portion formed with corrugation his and corrugation valleys. A distance between the reinforcing layer and tops of the corrugation hills of the corrugated metal tube is designed 0.27 mm or less.

Abstract: A progressing cavity pump or a motor includes, in one embodiment, an outer tube 12, an inner tube 14, and a plurality of apertures 16. A pair of annular seal glands 18 seal the stator material to the outer tube. The stator material is injection molded into the inner tube and passes through the plurality of apertures and into an annular gap between the inner tube and the outer tube. In other embodiments, the outer housing for a progressing cavity pump or motor is provided with one or more grooves, with each groove having an outer surface radius less than the outer housing surface radius. A plurality of apertures are provided in fluid communication with the grooves. According to the method of the invention, the stator material is injected into the apertures and fills a space radially outward of the apertures to bond the stator materiaal to the outer housing.

Abstract: The invention relates to a stator for an eccentric screw pump or an eccentric worm motor having a stator, including an outer tube that is provided with a lining of rubber or a rubber-like material and has a hollow space, in the shape of a double or multiple spiral, for accommodating a rigid rotor that is also in the form of a spiral, whereby the spiral of the stator has one spiral more than does the motor. To provide a stator that also remains functional under conditions where the fixed connection between the lining and the outer tube would be destroyed, e.g. due to chemical influences or high temperatures, the invention proposes that an inner tube provided with apertures is disposed in the lining, and that spacing strips are disposed between outer tube and inner tube.

Abstract: A composite hose with a corrugated metal tube has a hose body having a corrugated metal tube and an outer layer. The corrugated metal tube includes a non-corrugated straight-walled portion on an end portion thereof, and a rigid insert pipe is inserted in the straight-walled portion. A socket fitting is fitted on the hose body by being swaged thereon radially inwardly, and an inner circumferential end portion of the collar portion and an outer circumferential surface of the insert pipe compress an extending portion of the straight-walled portion to fix the straight-walled portion onto the insert pipe and provide a seal between the outer circumferential surface of the insert pipe and an inner circumferential surface of the straight-walled portion. A fracture preventing mechanism is provided on a hose end portion for preventing fracture of the straight-walled portion.

Abstract: The invention relates to a stator for an eccentric screw pump or an eccentric worm motor, including an outer tube that is provided with a lining of rubber or a rubber-like material and has a hollow space or cavity, in the shape of a double or multiple spiral, for accommodating a rigid rotor that is also in the form of a spiral, whereby the stator has one spiral more than does the motor. So that the stator also remains functional under conditions where the fixed connection between the lining and the outer tube could be destroyed, e.g. due to chemical influences or high temperatures, the invention proposes disposing two inner tubes that have apertures in the lining.

Abstract: A composite hose is provided with a corrugated metal tube as a barrier layer against permeation of conveyed fluid, and an elastic filler layer which is filled in valley gaps between corrugation hills on an outer peripheral side of the corrugated metal tube. The elastic filler layer is filled completely in the valley gaps to tops of the corrugation hills. A radial thickness of the elastic filler layer measured radially outwardly from a radial position of the tops of the corrugation hills is designed 0.3 mm or less.

Abstract: A composite hose is provided with a corrugated metal tube of an inner layer and rubber filler which is filled in valley gaps between corrugation hills on an outer peripheral side of the corrugated metal tube. A tubular hard resin layer is further provided as cover layer on an outer side of the corrugated metal tube in order to enclose the rubber filler within the valley gaps to prevent the rubber filler from escaping radially outwardly.

Abstract: A flexible tubular pipe for hydrocarbon transport, comprising from inside to outside at least a carcass, an inner sheath, tensile armoring plies and an outer sheath, wherein the carcass is formed by winding of at least an anti-corrosive elongated metal element with large cross-section, with successive windings stapled with a thin anti-corrosive metal strip.

Abstract: The present invention is directed to an irrigation device and irrigation system. More specifically, the present invention is directed to a weep or tear type irrigation device and irrigation system.

Abstract: A heat-reflective protective sleeve includes a substrate (10) and a sheet of reflective material (20) fixed on the substrate (10). The substrate (10) is elastically deformable from a non-operating position and the sheet (20) is pleated on the substrate (10) in the non-operating position.

Abstract: The invention concerns a flexible duct (1) comprising from inside outwards a carcass (2) produced by a short-pitched metallic helical winding forming butt gaps (12), an overlapping layer (10) acting as a heat shield consisting of helically wound plastic strips (10a, 10b), a sealed inner pressure sheath (3), extruded in plastic on said overlapping layer (10), at least an armouring web (5) and at least an outer sealing sheath (7). The invention is characterised in that the overlapping strips (10a, 10b) are wound at a winding angle less than 35°.

Abstract: A hose of a laminated structure which comprises a rubber layer composed of a rubber composition, and a laminate including a metal foil and a resin, the rubber composition including: (A) a rubber including at least one of an ethylene-propylene-diene terpolymer and an ethylene-propylene copolymer; (B) a peroxide vulcanizing agent; (C) a resorcinol compound; and (D) a melamine resin. The hose is light in weight, less costly, and has excellent gas barrier properties.

Abstract: A duct formed from at least one helically wound strip of flexible material and at least one stiffening element. Stiffening element has a ratio of radial height to axial length of greater than 1.0. The stiffening element may be substantially planar.

Abstract: A leak-free flexible conduit and method of making the same is described. By attaching a flexible outer hose to a flexible inner hose without directly clamping the outer hose to the inner hose, the life of the inner hose is increased. Furthermore, the outer flexible hose creates a heat-resistant, airtight seal that prevents exhaust leaks from the inner flexible hose from escaping, substantially reduces the heat lost to the atmosphere, decreases the amount of vibration, reduces noise, and protects the inner flexible hose from corrosive elements and contaminants, thereby also extending the life of the inner flexible hose.

Abstract: In a hose with corrugated metal tube, a connecting pipe is formed with a tapered inner surface in a tip end portion thereof a corrugated metal tube is formed with a flared portion flaring as to correspond to the tapered inner surface of the connecting pipe, and a mating pipe is formed with a tapered outer surface. The hose with corrugated metal tube is connected to the mating pipe by a cap nut so that the tapered inner space of the connecting pipe abuts the tapered outer surface of the mating pipe with the flared portion therebetween.

Abstract: The hose of the present invention comprising: a hose body 12 having an inner layer composed of a bellow metallic tube 22 and a jacket of at least one outer layer, with the hose body having a longitudinal edge at one end thereof; an insert pipe 14 extending longitudinally into the hose body 12 and a metallic sleeve 16 compressing the jacket against the insert pipe 14 at each of a plurality of pressure points disposed axially along the longitudinal edge of the hose body from said one end with said bellow metallic tube having a restricted end portion at one end thereof located forward of the last pressure point. The bellows metallic tube preferably has a straight tube portion integral to the bellows metallic tube for representing the restricted end portion thereof.

Abstract: Polyamide liners used in sub sea and over ground transport operations, such as nylon (11), are handled in a way which increases the rate of chain recombination relative to the competing process of chain scission. This enhances and increased the useable life of the polyamide liner by effectively reducing its rate of aging. The can be accomplished by incorporating a chain extender or desiccant into the polyamide liner, incorporating hydrophobic moieties or hydrophobic polymers into the polyamide liner, or by providing a sheath which is less permeable to water at the inner surface of the polyamide liner. Rejuvenation of the polyamide liner can also be achieved by heat treatment of the polyamide liner by hot air, hot oil or gas, or other hot liquids that are at a temperature above 1000° C. Rejuvenation may be enhanced by including a chain extender or desiccant to a hot oil, gas, or other liquid that is exposed to the polyamide liner.

Abstract: Using a balanced flow path, multiple layers of extruded plastic are supplied to a chamber having independently rotating surfaces. Said rotating surfaces apply a shear force to at least the inner and outer layers of said extruded plastic to orient said materials in said layers in different helical patterns, thereby forming a multi-layer tubular product in which at least inner and outer layers have different helical patterns to strengthen the product.

Abstract: A coated metal tubing arrangement comprises a metal tube. An inner layer of a first polymeric material is bonded to the tube to provide corrosion protection. The first polymeric material has a high crystallinity, a dampening factor of less than 0.05, and a flexural modulus of at least 100 MPa. An outer layer of a second polymeric material is extruded around the inner layer to absorb impact energies and to eliminate mechanical vibrations and acoustic noises. The second polymeric material has a dampening factor of at least 0.05 and a flexural modulus of less than 50 Mpa. The second polymeric material is a multi-phase polymer having at least one polymer component with a glass-transition temperature below room temperature.

Abstract: A metal-composite corrugated hose having a wall including a metal layer forming its innermost layer and a resin layer surrounding it. Its wall has in its corrugated portion a metal layer thickness (A) of at least 20 &mgr;m, but below 200 &mgr;m, and a resin layer thickness (B) of 80 to 5,000 &mgr;m. Each thickness of A and B has a ratio (A:B) of 1:4 to 1:50. The hose is made by a specific process in which the metal and resin layers are not corrugated simultaneously. Thus, there is a provided a metal-composite corrugated hose having high fuel impermeability, flexibility and strength, and having a reinforcing effect sufficient to protect the metal layer from any fatigue failure.

Abstract: This flexible tubular pipe 1 comprising, from the inside outwards, at least, a carcass consisting of an interlocked metal strip 3, an internal sealing sheath 4, a cylindrical pressure vault 5 consisting of the winding of an interlocked profile metal wire wound in a helix with a short pitch, at least one ply of tensile armour wires 7 wound with a long pitch and an external protective sealing sheath 8, is characterized by a wire 9 wound with a short pitch over the ply of armour wires 7 so that its deformable sheath 11 partially penetrates the gaps 12 in the said ply.

Abstract: A coated metal tubing arrangement comprises a metal tube. An inner layer of a first polymeric material is bonded to the tube to provide corrosion protection. The first polymeric material has a high crystallinity, a dampening factor of less than 0.05, and a flexural modulus of at least 100 MPa. An outer layer of a second polymeric material is extruded around the inner layer to absorb impact energies and to eliminate mechanical vibrations and acoustic noises. The second polymeric material has a dampening factor of at least 0.05 and a flexural modulus of less than 50 Mpa. The second polymeric material is a multi-phase polymer having at least one polymer component with a glass-transition temperature below room temperature.

Abstract: A structure of a multilayer tube includes at least one layer made of a composite material (2-8) having reinforcing fibers embedded in a polymer matrix, and at least one sealing sheath (1) made of a low-permeability polymer material. The tube has a metal carcass (9) interior to the sheath. In a variant, the carcass is made of stapled steel tape (10).

Abstract: Plastic tube fluid handling means provided in the form of one or more polymeric tubes embedded in foil laminate which includes metal and at least one polymer. The preferred polymers are polyolefins and polyamides. The metal provides barrier protection making the structure suitable for use in fuel lines, refrigerator hose, in-floor heating pipe, solar hot water heating systems and the like. The tubes are of a geometry which provides burst strength, so that the metal can be quite thin.