Abstract: A highly corrosion and abrasion resistant coating combination for high precision metal tubing comprises a passivation layer applied to the tubing and a thermoplastic jacket extruded onto the passivated tubing. In an embodiment, the passivation layer is formed by electropolishing the exterior surface of the tube to remove impurities in an upper layer of the tube.

Abstract: A method for manufacturing a bi-material sleeve is provided. The sleeve includes an annular outer sleeve and an annular inner sleeve bonded to each other. The bottom pouring of the outer sleeve is carried out in a casting space delimited by a wall of a first ingot mold and by an outer upwardly moveable wall of a second ingot mold concentric with the first. The moveable wall of the second ingot mold is raised so as to uncover the skin of the outer sleeve which has solidified thereagainst. The bottom pouring and the solidification of the inner sleeve are carried out in a casting space delimited by said skin and an inner stationary wall of said second ingot mold, the bonding of both sleeves being effected by diffusion between said sleeves. Forging and/or machining of one of said bonded sleeves are optionally carried out. A device for using this method and a sleeve produced by this method are also provided.

Abstract: One aspect of the invention provides an energy dissipative tube including: a length of tubing; an inner resin layer surrounding an outer surface of said tubing; a metal foil adjacent to an outer surface of said inner resin layer; and an outer resin layer surrounding said metal foil and said inner resin layer. The outer resin has a property selected from the group consisting of: static dissipative and antistatic.

Abstract: Mortar-coated steel pipe comprise a steel cylinder having a mortar layer disposed therein, such mortar layer being free of any metallic reinforcement. An overcoat is disposed over the mortar layer and is formed from a material that is a dielectric and/or a barrier to moisture and oxygen entering the mortar layer, e.g., a polymeric material. The pipe may include a further concrete or mortar layer disposed over the overcoat, forming an outermost pipe surface. The outer layer can be cement, mortar, or other material. The mortar layer thickness is about 2 to 30 mm, the overcoat thickness is about 0.1 to 2 mm, and any outer layer thickness is about 1.2 to 4 cm. The pipe is made by compression coating method, where mortar layer and overcoat are applied simultaneously. When an outer layer is desired, it is preferably applied at the same time as the mortar layer and overcoat.

Abstract: A tubular structure and method for making a tubular structure are provided, where the tubular structure includes at least one layer of braided strands. In general, at least one portion of the braided strands exhibits a braid pattern of crests and troughs (e.g., a wave pattern, which may include sinusoidal, square, and/or sawtooth waves) along a length of the tubular structure. The wave pattern can be created by rotating the mandrel onto which the tubular structure is braided during the braiding process, such as by angularly oscillating the mandrel about its longitudinal axis or about its transverse axis. As a result, the tubular structures may have increased radial strength, collapse resistance, torque transmission, column strength, and kink resistance. The tubular structures may be used in medical devices, such as stent-grafts, as well as in other medical and non-medical devices, such as in hoses, tubing, filters, and other devices.

Abstract: One aspect of the invention provides an energy dissipative tube including: a length of tubing; an inner resin layer surrounding an outer surface of said tubing, wherein said inner resin layer is substantially free of a fire retardant; a non-expanded metal foil adjacent to an outer surface of said inner resin layer; and an outer resin layer surrounding said metal foil and said inner resin layer, wherein said outer resin layer includes a fire retardant. Another aspect of the invention provides an energy dissipative tube include: a length of tubing; an inner resin layer surrounding an outer surface of said tubing, wherein said inner resin layer is static dissipative; a non-expanded metal foil adjacent to an outer surface of said inner resin layer; and an outer resin layer surrounding said metal foil and said inner resin layer, wherein said outer resin layer is conductive.

Abstract: A composite hose includes a tubular body of flexible material for transferring cryogenic fluid through the hose and for preventing fluid leakage through the body. The tubular body includes an inner wire helix spirally wound along the length of the hose, an outer wire helix spirally wound along the length of the hose, at least two reinforcing layers placed in between the inner and outer wire, at least one sealing layer placed between two reinforcing layers, an end fitting at both ends of the tubular body, each end fitting provided with a part for connection to another hose flange and an elongated cylindrical part, which is divided in an anchoring area for anchoring the tubular body and a static sealing area for fluid tight sealing of the hose. A gas tight sealing is created by bonding the at least one sealing layer to the cylindrical part over a ring shaped bonding area.

Abstract: An object of the present invention is to provide an exhaust pipe in which a peeling of a constituent member does not occur and reliability thereof is excellent, and an exhaust pipe allowing exhaust gases to flow through the exhaust pipe of the present invention includes a heat-releasing layer containing a crystalline inorganic material and an amorphous inorganic material and having infrared emissivity higher than infrared emissivity of a base, wherein irregularities are formed on a surface of the base on which the heat-releasing layer is to be formed.

Abstract: The present invention relates to a multilayer insulation based on expandable and crosslinkable elastomeric material with improved low temperature resistance and flexibility, the process for manufacturing of such material and system, and the use of such material and system.

Abstract: The present invention relates to an oil pipe having a lining imparting substantially reduced adhesion of asphaltenes, paraffin wax, and inorganic scale, so as to reduce plugging of said oil pipe, and impermeability to salt water so as to protect the oil pipe from corrosion.

Abstract: A hose comprising a tubular body of flexible material arranged between inner and outer gripping members, wherein at least one of the gripping members is made of a material, especially a composite material, which expands on cooling.

Abstract: The present disclosure is directed to embodiments of composite tubing having properties tailored to meet a wide variety of environmental and working conditions. Composite tubes disclosed herein may include one or more of the following layers: a internal liner, a composite layer, a thermal insulation layer, a crush resistant layer, a permeation barrier, buoyancy control layer, a pressure barrier layer, and a wear resistant layer. Grooves may be provided in one or more layers of the composite tube to provide increased axial permeability to the composite tube. A venting system, including vent paths, may be provided in the composite tube to vent fluid that may become trapped within the wall of the composite tube.

Abstract: A pipe or tube article comprising an innermost layer made from a grafted polyolefin composition is disclosed which can provide long lifetime, highly abrasion-resistant pipes for mining and other transportation uses. Methods for preparing the article and transporting abrasive materials through the article are also described.

Abstract: A pipe- or tube-shaped article comprising an innermost layer made from a grafted polyolefin composition is disclosed which can provide long lifetime, highly abrasion-resistant pipes for mining and other transportation uses. Methods for preparing the article and transporting abrasive materials through the article are also described.

Abstract: A method for making conduits includes inserting an inner tube into an outer tube and melting a portion of the inner tube to form a bond with the outer tube. The inner tube includes a polymeric material and the outer tube includes a material having a greater yield strength than the polymeric material. A conduit includes one or more inner tubes at least one of which is melt-bonded to one or more outer tubes. An analytical instrument includes a separation column, a solvent reservoir and pump, a sample injector, a detector to observe an eluent of the separation column, and tubing to transport fluid between components of the instrument.

Abstract: A flexible hose for conveying fluids and suitable for high temperature environments, the hose comprising a core tube, a thermal insulating layer surrounding the core tube, a metal layer surrounding the thermal insulating layer, and a vented jacket surrounding the cover layer. The thermal insulating layer may be a fibrous material such as a silica fiber. The metal layer may also be a chemical resistant layer and be thermally stable up to at least about 550° F. The vented jacket may be a wire braid having interstices therein and formed from a corrosion resistant material.

Abstract: A seamless composite metal tube comprises an inner layer (1) consisting of copper or a copper alloy, an outer layer (5) consisting of aluminium or an aluminium alloy, and at least three different intermediate intermetallic layers (2, 3, 4) each consisting of copper and aluminium, wherein the concentration of copper decreases from the inner layer (1) to the outer layer (5) in the radial direction of the tube.

Abstract: Disclosed is a multilayer structure useful for preparing highly abrasion-resistant protective liners, including tubular articles such as multilayer tubes or pipes.

Abstract: A metallic tube, including a first cylindrical member, which is formed from a flat metal strip, and a second cylindrical member, which is formed from a flat metal strip, wherein the first cylindrical member is embedded within the second cylindrical member.

Abstract: Pressure cast lined steel pipes comprise an annular concrete or mortar liner along an inside diameter, and a metal shell surrounding the liner, wherein the liner is in direct contact with the metal shell. The wall thickness of the liner can be from 10 to 50 times the thickness of the metal shell. The pipe may be coated with a dielectric material. A mold assembly used to form the pipe includes an annular concrete or mortar composition chamber formed between the metal shell and an inner mold member. Pressurized water is used in the mold assembly to pressurize the concrete or mortar composition and exert a desired pressure force onto the metal shell while the composition cures in the mold. Once a desired degree of cure is achieved, the pressure is removed causing the metal shell to exert a desired compression force onto the cured liner.

Abstract: The present invention deals with coated pipes having a layer of multimodal polyethylene. The multimodal ethylene copolymer is a copolymer of ethylene with one or more alpha-olefin comonomers having from 4 to 10 carbon atoms and has a weight average molecular weight of from 70000 g/mol to 250000 g/mol, the ratio of the weight average molecular weight to the number average molecular weight, Mw/Mn, of from 15 to 50, a melt index MFR2 of from 0.05 g/10 min to 5 g/10 min, a melt index MFR5 of from 0.5 to 10 g/10 min and a density of from 930 kg/m to 955 kg/m3.

Abstract: An apparatus for conveying fluid comprising a first tube and a second tube. The first tube has a first end and a second end, an inner wall and an outer wall. The inner wall defines a passage for fluid and an outer wall has at least one first receiving section for receiving an inner wail from the second tube. The second tube has a first end and a second end, an inner wall and an outer wall. The inner wall defines a chamber for receiving the first tube and has at least one second receiving section for receiving the outer wall of the first tube wherein at least one of the first tube and the second tube are drawn down such that the first receiving section and the second receiving section of the first tube and the second tube are in close proximity to each other and sealed.

Abstract: The invention relates to a multilayer tube comprising a metal tube having an inner surface and an outer surface, a first polymeric layer bonded to the outer surface, and preferably a second polymeric layer bonded to the inner surface, and wherein the metal tube is made from an aluminium alloy having, in wt. %: Si 1.5 to 2.45, Fe 0.5 to 1.2, Mn 0.5 to 1.2, Cu 0.3 to 1, Mg 0.04 to 0.3, Ti<0.25, Zn<1.2, and other impurities or incidental elements, each <0.05, total <0.25, and the balance being aluminium.

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 glass-fiber reinforced plastic pipe comprises a pipe body and an inner core fixedly provided on an inner wall of the pipe body, wherein an upper end of the inner core is lower than an upper end of the pipe body, so that a first heat-insulating space is formed between the upper ends of the inner core and the pipe body, and a lower end of the inner core is higher than a lower end of the pipe body, so that a second heat-insulating space is formed between the lower ends of the inner core and the pipe body. Due to the inner core as a reinforce structure, the shear resistance strength of the glass-fiber reinforced plastic pipe is improved without increasing the thickness of the pipe wall, and furthermore the mechanical performance of a supporting device of the cryogenic pressure vessel is improved.

Abstract: The invention relates to an apparatus for making a multilayer composite pipe. The multilayer composite pipe comprises an innermost layer (2) made of plastic. The pipe has a seamless metal layer (4) or a metal layer (4) having an axial, non-overlapping seam. The outer surface of the metal layer is treated for changing its outer appearance. There-after a transparent outermost layer (8) is provided on the outer surface of the metal layer. The structure of the pipe is such that the pipe can be permanently bent to certain angles without significant spring back.

Abstract: The present disclosure relates to a composite pipe having improved bonding strength between heterogeneous materials, which provides continuous bonding strength by chemical bond between heterogeneous materials, thereby preventing separation between the heterogeneous materials even at a high temperature and a high pressure, so as to replace a metal-based pipe used in fields of industry demanding heat resistance and chemical resistance, and an apparatus and a method of manufacturing the composite pipe. Accordingly, strong bonding strength according to chemical bond in the unit of nano between the heterogeneous materials is achieved, so that separation between the heterogeneous materials is not generated even at a high temperature and a high pressure, thereby being capable of further expanding the applicable fields of industry.

Abstract: There is provided a Cr-containing austenitic alloy tube, wherein a chromium oxide film with a thickness of 0.05 to 1.5 ?m having the relationship defined by Formula (i) is formed on the inner surface of the tube, wherein the average concentration of C in the depth range of 5 to 10 ?m from the inner surface is lower than the concentration of C in a base metal; 0.4??1/?2?2.5??(i) wherein ?1 and ?2 are thicknesses (?m) of the chromium oxide film at both ends of tube, respectively.

Abstract: An exhaust system for motor vehicles has a component made from a coated steel sheet. The steel sheet has a thickness of at most 4.5 mm and is formed of a ferritic stainless steel having a chromium content of from 10.5% to 25%, a molybdenum content of from 0 to 2.5%, and a titanium and/or niobium content of from 0.1 to 2% each. The coating of the steel sheet consists essentially of nickel.

Abstract: A highly corrosion and abrasion resistant coating combination for high precision metal tubing comprises a passivation layer applied to the tubing and a thermoplastic jacket extruded onto the passivated tubing.

Abstract: A pipe or tube article comprising an innermost comprising a grafted polyolefin composition made from a grafted polyolefin composition is disclosed which can provide long lifetime, highly abrasion-resistant pipes for mining and other transportation uses. Methods for preparing the article and transporting abrasive materials through the article are also described.

Abstract: Disclosed is a metal pipe which is for vehicle piping and which exhibits high corrosion resistance without the corrosion resistance being strengthened by means of a coating or a resin coating-layer, due to a hot-dip plating coating-layer being formed by applying a hot-dip plating to the pipe. The disclosed metal pipe for vehicle piping has a plating coating-layer formed on the surface of a formed metal pipe, said plating coating-layer being formed by means of hot-dip plating on the surface of the metal pipe, and the plating coating-layer being formed from a hot-dip plating alloy comprising at least 3 weight % Al, 1-15 weight % Mg, and Zn and unavoidable impurities as the remainder.

Abstract: Method to make a curved tubular element in order to convey abrasive materials such as concrete or suchlike, which comprises a first step of making at least a curved component made of a material highly resistant to wear, having an arched transverse development comprised between 90° and 360°, a second step of inserting said curved component into a shaping mold with a molding surface with a shape mating with the outer surface of at least a part of the curved tubular element to be made, so that, together with said molding surface, said curved component defines a casting chamber, and a third step in which material with a low resistance to wear is cast in said casting chamber in order to make, externally to said curved component, at least a part of a tubular body of said curved tubular element.

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: To provide a steel fuel conveying pipe which has high resistance to corrosive fuel and maintains reliability without damaging a direct-injection engine, and connects a high-pressure pump and a direct-injection rail with each other in a gasoline direct-injection engine system, and a fuel conveying pipe suitable as a bypass pipe for coupling direct-injection rails with each other in a V-type gasoline engine. A steel fuel conveying pipe for conveying gasoline is characterized in that a Ni-plated layer is provided on the whole inner circumferential face of the fuel conveying pipe, and an anti-rust film layer composed of a Zn-plated layer and a Zn-based alloy-plated layer is further provided on the Ni-plated layer at at least one end of the fuel conveying pipe.

Abstract: A method for attaching together by means of explosion welding two metal pipes (2; 3) arranged within each other, wherein a mantle of explosive material (5) is arranged around the outer pipe (2) and this mantle is made to explode in order to cause a metallurgical joint between the two pipes, according to the present invention is characterised in that the interior (4) of the inner pipe (3) is filled with granular material (6) and the interstices left free by the granular material (6) are filled with liquid (7) before the explosive material (5) is made to explode.

Abstract: An exhaust manifold includes: a double collecting pipe formed of inner and outer pipes; and an inner pipe retainer formed of a pair of semi-circular portions and a connecting portion. The inner pipe includes a collecting pipe portion and bifurcated branch pipe portions. The outer pipe covers outer peripheral portions of the collecting and branch pipe portions. The semi-circular portions are respectively connected to outer peripheral portions of branched branch pipe portions and an inner peripheral portion of the outer pipe. The connecting portion connects the semi-circular portions. The inner pipe retainer is interposed between the inner pipe and the outer pipe and is connected to the inner pipe and the outer pipe to define a certain gap therebetween. Exhaust gas from exhaust ports of a set of cylinders among a plurality of cylinders of an engine is introduced into the collecting pipe portion through the branch pipe portions.

Abstract: Coated pipes have a layer of multimodal polyethylene. The multimodal ethylene copolymer is a copolymer of ethylene with one or more alpha-olefin comonomers having from 4 to 10 carbon atoms and has a weight average molecular weight of from 70000 g/mol to 250000 g/mol, the ratio of the weight average molecular weight to the number average molecular weight, Mw/Mn, of from 15 to 50, a melt index MFR2 of from 0.05 g/10 min to 5 g/10 min, a melt index MFR5 of from 0.5 to 10 g/10 min and a density of from 930 kg/m3 to 955 kg/m3.

Abstract: An exhaust manifold includes: a double collecting pipe having an inner pipe, including a collecting pipe portion and branch pipe portions, and an outer pipe, covering the collecting and branch pipe portions and thicker than the inner pipe; and an inner pipe retainer having semi-circular portions and a connecting portion, and thicker than the inner pipe and thinner than the outer pipe. The inner pipe retainer connects the inner and outer pipes with a gap therebetween. Exhaust gas from exhaust ports of a set of cylinders is introduced into the collecting pipe portion through the branch pipe portions. The total spot-welded area of the outer peripheral portions of the branch pipe portions and the inner peripheral portions of the semi-circular portions is larger than that of the inner peripheral portion of the outer pipe and the outer peripheral portions of the semi-circular portions.

Abstract: The invention relates to a multilayer tube comprising a metal tube having an inner surface and an outer surface, a first polymeric layer bonded to the outer surface, and preferably a second polymeric layer bonded to the inner surface, and wherein the metal tube is made from an aluminium alloy having, in wt. %: Si 1.5 to 2.45, Fe 0.5 to 1.2, Mn 0.5 to 1.2, Cu 0.3 to 1, Mg 0.04 to 0.3, Ti<0.25, Zn<1.2, and other impurities or incidental elements, each <0.05, total <0.25, and the balance being aluminium.

Abstract: A composite pipe has a metal conduit sandwiched between inner and outer conduits of PVC/CPVC, each of which are adhesively secured to the interlaying metal conduit with a dried, solvent-free thin layer of a thermosetting bilayer adhesive which provides a bond with the metal, which bond fails in cohesive failure. Narrowly defined limits on the thickness of each conduit are found to provide a bendable composite pipe with an aluminum interlayer; and to provide a rigid non-bendable composite pipe with a steel interlayer. Making the composite pipe which meets required ASTM and NSF test considerations requires unexpectedly critical process steps. A process for making the pipe is disclosed, as are PVC/CPVC fittings which allow lengths of pipe to be solvent-cemented in them so as to seal the terminal ends of the pipe against infusion of fluid under pressure in the pipe, thus preventing delamination.

Abstract: An object of the present invention is to provide an exhaust pipe that can lower the temperature of exhaust gases when the exhaust gases having a high temperature pass through the exhaust pipe. The exhaust pipe of the present invention, which allows exhaust gases to flow through the exhaust pipe, comprises a base that contains metal and has a cylindrical shape; and a surface-coating layer that contains a plurality of crystalline inorganic materials and an amorphous binder and is formed on the outer peripheral face of the base, wherein the plurality of crystalline inorganic materials are distributed in the surface-coating layer, in an accumulative manner in a thickness direction, and the amorphous binder has an average thickness of 20 ?m or less at a location nearer the outer peripheral face of the exhaust pipe than a location of the crystalline inorganic materials.

Abstract: A pipe comprising an outer rigid conduit and an inner tubular structure, the inner tubular structure comprising a flexible hose, wherein the hose comprises a tubular body disposed between inner and outer gripping members, the tubular body including a sealing layer, and being formed of a material capable of withstanding cryogenic temperatures, wherein the inner tubular structure has insulation properties sufficient to protect the outer conduit from the low temperature of cryogenic fluid flowing within the inner tubular structure.

Abstract: A flexible insulation material and method for using such an insulation material with an HVAC duct to provide noise suppression and thermal protection. The insulation material includes a lofted substrate and a facer sheet laminated thereto. The substrate contains nonwoven lofted fibers and the insulation material is attached to the duct such that a first surface of the substrate faces a wall surface of the duct and the facer sheet is on the opposite surface of the substrate. The facer sheet includes a polymeric film bonded to the substrate, a metallization layer on the polymeric film, and optionally a protective coating on the metallization layer. The insulation material can be used as an external duct wrap or an internal duct liner. In the former application, the insulation material preferably includes a second facer sheet on the first surface of the substrate.

Abstract: A flexible hose for conveying fluids and suitable for high temperature environments, the hose comprising a core tube, a thermal insulating layer surrounding the core tube, a metal layer surrounding the thermal insulating layer, and a vented jacket surrounding the cover layer. The thermal insulating layer may be a fibrous material such as a silica fiber. The metal layer may also be a chemical resistant layer and be thermally stable up to at least about 550° F. The vented jacket may be a wire braid having interstices therein and formed from a corrosion resistant material.

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: Pressure cast lined steel pipes comprise an annular concrete or mortar liner along an inside diameter, and a metal shell surrounding the liner, wherein the liner is in direct contact with the metal shell. The wall thickness of the liner can be from 10 to 50 times the thickness of the metal shell. The pipe may be coated with a dielectric material. A mold assembly used to form the pipe includes an annular concrete or mortar composition chamber formed between the metal shell and an inner mold member. Pressurized water is used in the mold assembly to pressurize the concrete or mortar composition and exert a desired pressure force onto the metal shell while the composition cures in the mold. Once a desired degree of cure is achieved, the pressure is removed causing the metal shell to exert a desired compression force onto the cured liner.

Abstract: The present invention relates to an aluminum alloy brazing sheet (1) for a heat exchanger improved in a life including a fatigue in a plastic area and an aluminum alloy heat exchanger tube (11) using the brazing sheet, which is composed of: a core material (2) of an Al—Mn series alloy; a skin material (3) of any one of an Al—Zn series alloy, an Al—Zn—Mg series alloy, an Al—Si—Mn—Zn series alloy, and an Al—Si—Mn—Mg—Zn series alloy clad on one side of the core material; and a brazing material (4) of an Al—Si series alloy clad on the other side of the core material, and is adapted so that an X-ray diffraction intensity ratio of the aluminum alloy brazing sheet satisfies a relational expression of I200/(I111+I200+I220+I311)?0.4.

Abstract: A composite pipe and a manufacturing method for the same are disclosed. The composite pipe for replacing carbon steel pipes for ordinary piping or copper pipes for air-conditioner includes: a first resin layer (1) formed by cross-linking a resin and giving a polar group thereto; a first bonding layer (2) for inducing bonding by sharing radical groups of the first resin layer and a metal layer; the metal layer (3); a second bonding layer (4) for inducing bonding by sharing radical groups of the metal layer; and a second resin layer (5) formed by cross-linking a resin and giving a polar group thereto, thereby integrating the layers chemically and physically.

Abstract: A tubular body comprises an inner hollow core and an outer casing of one or more strips of self mechanically inter-engaging helically wound material having a higher yield strength than that of the core material. Also provided is a method of forming the tubular body comprising the steps of winding the outer core onto the inner core and an end connector for use with said tubular body when said body is provided with helically extending detents on an outer surface thereof.