| Patents for F16L 9 - Rigid pipes (18,006) |
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| 01/13/2010 | CN201382210Y Moisture-proof and fire-proof air pipe |
| 01/13/2010 | CN201382209Y Delivery duct for low concentration gas |
| 01/13/2010 | CN101625052A Corrosion-resistant centrifugal bimetal composite pipe and production method thereof |
| 01/13/2010 | CN100580297C Pre-stress steel cylinder concrete pipe with low water absorbing capacity and production method thereof |
| 01/13/2010 | CN100580296C Thin wall non-corrodible steel sharp corner square, rectangular pipe and its production facility |
| 01/12/2010 | US7644733 Duct with spiral groove |
| 01/12/2010 | CA2425611C Lined pipeline vent |
| 01/07/2010 | US20100003437 Method of producing a shaped article having excellent barrier properties |
| 01/07/2010 | US20100000622 Fastening of pipes |
| 01/07/2010 | US20100000286 Welded Component Comprising Seamless Bent Pipe and Seamless Straight Pipe Sections and Methods of Manufacturing Thereof |
| 01/07/2010 | DE102008030966A1 Frictionless surface/wall for e.g. catheter hose, has glasslike, smooth patterns comprising surface elevations and/or recesses on inner side, and cold or warm tool pressing wall of inner side of cold or warm hose |
| 01/06/2010 | EP2141002A1 Composite component made of at least two sub-components and one of these joining components and method of producing the same |
| 01/06/2010 | EP2140189A1 Irrigation pipe |
| 01/06/2010 | CN101619783A Fiber cement mortar prestressed concrete tube |
| 01/06/2010 | CN101619782A Injection molding type steel mesh reinforced plastic pressure pipe as well as manufacture method and processing mold thereof |
| 01/06/2010 | CN101619781A Carbon fiber concrete pipe and manufacture method thereof |
| 01/06/2010 | CN101619780A Technological method for upwardly continuously casting, rolling, drawing and producing copper alloy tubes |
| 01/05/2010 | US7640950 Collapse tolerant flexible pipe and method of manufacturing same |
| 01/05/2010 | US7640604 Waste removal system |
| 01/05/2010 | CA2594128C Integrated piping plate |
| 01/05/2010 | CA2502099C An antistatic hose for conveying fluids |
| 12/31/2009 | US20090321461 Venting Tubing System For A Fuel Tank |
| 12/31/2009 | US20090320954 Folded-seam connection, method of producing it and device |
| 12/31/2009 | US20090320953 Interstitially Insulated Pipes and Connection Technologies |
| 12/31/2009 | US20090320950 Unified conduit array |
| 12/31/2009 | DE102008030831A1 Three-layer type plastic pipe, has straight inner pipe and corrugated middle pipe, which is formed on inner pipe, where plastic pipe is made up of thermoplastic material consisting of polypropylene, polyethylene or mixture of two |
| 12/31/2009 | DE102008029167A1 Vorrichtung zur kontinuierlichen Herstellung von Umhüllungen für langgestrecktes Gut und Umlenkbehälter zur Verwendung in dieser Apparatus for the continuous production of coatings for elongated product and divert for use in this |
| 12/31/2009 | DE102008022933B3 Coaxial molding e.g. for air-conditioning unit, has convexly curved front face of coaxial molding |
| 12/30/2009 | WO2009111357A3 Multilayer heat tracing insulation device and method |
| 12/30/2009 | EP2137444A2 Corrugated stainless steel tubing with smooth bore |
| 12/30/2009 | CN201373184Y Ceramic metal composite tube |
| 12/30/2009 | CN201373183Y Reinforced resin concrete tube |
| 12/30/2009 | CN201373182Y Jacking pipe compounded by glass fibre reinforced plastic and pre-stressed steel cylinder concrete |
| 12/30/2009 | CN201373181Y Prestressed concrete pipe with steel bearing ring working surface |
| 12/30/2009 | CN201373180Y Unbonded prestressed concrete pipe |
| 12/30/2009 | CN201372749Y Continuously-reinforced composite pipe for oil field well flushing |
| 12/30/2009 | CN101614305A Perforated plastic-aluminum composite pressure pipe |
| 12/29/2009 | US7637289 Sectional heat insulating jacket |
| 12/29/2009 | US7637288 Respiratory gas hose system for supplying a respiratory gas |
| 12/24/2009 | US20090315323 Glass-like carbon deformed molded article, process for producing the same, and joint structure for jointing a connecting member to a glass-like carbon hollow molded article |
| 12/24/2009 | US20090314377 Irrigation pipe |
| 12/24/2009 | US20090314376 Modular conduit structure and method of making same |
| 12/23/2009 | WO2009155173A2 Apparatus and method of reinforcing a conduit or vessel |
| 12/23/2009 | CN201368269Y Corrugated pipe wound with metal strips |
| 12/23/2009 | CN201368268Y High polymer steel frame fluid transfer device used in sea water desalinization and flue gas desulfurization |
| 12/23/2009 | CN201368267Y Entrapped gas pressure maintaining mechanism |
| 12/23/2009 | CN201368266Y Bidirectional compound pipe |
| 12/23/2009 | CN201368265Y Antistatic composite polyethylene tube |
| 12/23/2009 | CN101611089A Piping member formed by using propylene resin composition |
| 12/23/2009 | CN101608721A Steel-plastic composite pipe for low-pressure water delivery |
| 12/23/2009 | CN101608720A PP-R stabi composite pipe and split handpiece structure for manufacturing same |
| 12/22/2009 | CA2420088C Method of reinforcing an existing metal structure, method of reinforcing pipes and method of addition of spur lines to pipelines |
| 12/22/2009 | CA2388635C Multilayer pipe and method for manufacturing one |
| 12/22/2009 | CA2377672C Polyethylene molding material and pipe produced therewith with improved mechanical properties |
| 12/17/2009 | WO2009131607A3 Duct section, system and method for constructing same |
| 12/17/2009 | WO2009130358A3 System comprising double-walled ducts |
| 12/17/2009 | US20090308481 Cu/Al COMPOSITE PIPE AND A MANUFACTURING METHOD THEREOF |
| 12/17/2009 | US20090308477 Method for manufacturing a hollow shaft with at least one integral flange made of fiber composite |
| 12/17/2009 | US20090308475 Methods and systems for in situ manufacture and installation of non-metallic high pressure pipe and pipe liners |
| 12/17/2009 | US20090308466 Device for supplying fluid media at low temperatures |
| 12/17/2009 | DE102008027102A1 Double wall corrugated pipe has corrugated outer pipe with two wave troughs, which are connected with corrugated inner pipe along peripheral of double wall corrugated pipe |
| 12/17/2009 | DE102008026724A1 Catch for locking blade ring of blade mixer of exhaust system of diesel engine of lorry, has wedge-shaped expanding latch formed between catching recesses, and protruding over abutting edge in direction of another abutting edge |
| 12/17/2009 | DE102008024011A1 Longitudinal seam-welded multilayered tube for use in petrochemical industry, particularly for oil pipes, gas pipes and process pipes, has external layer and internal layer, where internal layer is firmly connected with external layer |
| 12/16/2009 | EP2133367A1 Novel Copolymers |
| 12/16/2009 | EP2132433A1 Plastic molded pipe |
| 12/16/2009 | CN201363488Y Color nylon aluminum alloy double-layer enhanced type composite round tube |
| 12/16/2009 | CN201361774Y Metal strip connection device of metal strip-reinforced polyethylene spiral dual-wall corrugated pipe |
| 12/16/2009 | CN101603616A Polyurethane composite pipe |
| 12/16/2009 | CN101603615A Prestressed plastic corrugated pipe and manufacturing method thereof |
| 12/16/2009 | CN101603614A Preparation technology of forging elbow |
| 12/16/2009 | CN101603613A Duplex metal wearable composite pipe |
| 12/16/2009 | CN100570196C Manufacturing method of polyethylene crosslinked foaming thermal insulation pipe |
| 12/16/2009 | CN100570195C Method of manufacturing large-diameter seamless steel tube |
| 12/16/2009 | CN100569504C PVC-U composite nano drainpipe manufacturing method |
| 12/15/2009 | US7632389 Open tube suitable for separation purposes comprising covalently bonded zwitterionic betaine groups |
| 12/15/2009 | US7631668 Piping element and manufacturing method and apparatus |
| 12/15/2009 | US7631667 Hose with integral coupling and method for producing the same |
| 12/15/2009 | CA2441720C Highly impact-resistant steel pipe and method for producing the same |
| 12/15/2009 | CA2377398C Use of a stainless steel for umbilicals in seawaters |
| 12/12/2009 | CA2663487A1 Air flow ducts |
| 12/10/2009 | WO2009148920A1 Shear increasing system |
| 12/10/2009 | WO2009146993A1 Compound tubes |
| 12/10/2009 | US20090304967 Making an elongated product |
| 12/10/2009 | US20090304451 Load bearing system |
| 12/10/2009 | US20090301598 Concentric tube support assembly |
| 12/10/2009 | US20090301597 Duct element forming an air-channel for air handling systems |
| 12/10/2009 | US20090301595 Multi-layer structure based on fluoride polymer functionalised by irradiation and pvc |
| 12/10/2009 | DE202009011081U1 Doppelwandiges Rohr mit Abstandshalter Double-walled pipe with spacers |
| 12/09/2009 | EP2131114A1 Plastic corrugated pipe with a flattened cross-section |
| 12/09/2009 | EP2131086A2 Multilayer tubular body, method and device for its production |
| 12/09/2009 | EP2130669A1 Compound tubes |
| 12/09/2009 | CN201359146Y Concrete prefabricated square pipe connected in broken line meshed mode |
| 12/09/2009 | CN201359145Y Prestressed connected concrete prefabricated square pipe |
| 12/09/2009 | CN201359144Y Composite water supply pipe fitting |
| 12/09/2009 | CN201359143Y PVC compound mine pipe |
| 12/09/2009 | CN201359142Y Concrete prefabricated square pipe |
| 12/09/2009 | CN201359141Y Galvanized pipe |
| 12/09/2009 | CN201359140Y Metal thin walled tube |
| 12/09/2009 | CN201358176Y Water pipe with nano-functional ceramic spheres |
| 12/09/2009 | CN101598249A Environment-friendly high fire-retardant melting sealed double-wall pipe |