| Patents for F16L 9 - Rigid pipes (18,006) |
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| 03/24/2004 | CN2607503Y Composite pipe |
| 03/23/2004 | US6711329 Flame retardant tubing bundle |
| 03/18/2004 | WO2004023017A1 Metal bellows tube, method of producing the same, and flexible tube for high-pressure fluid |
| 03/18/2004 | US20040050443 Composite pipe formed by a metallic outer pipe with inner lining of plastic material, method for manufacturing said pipe, and its use |
| 03/18/2004 | US20040050440 Flexible conduit, particularly for sanitary purposes |
| 03/17/2004 | CN1142377C Prestressed concrete pressure pipe and its making process |
| 03/16/2004 | US6706348 Composite spoolable tube with sensor |
| 03/11/2004 | WO2003027555A3 Porous pipe |
| 03/11/2004 | US20040045620 Method for extending the useable life of a polyamide pipe liner during use in a water-oil gas environment |
| 03/11/2004 | US20040045619 A multilayer PEX pipe having improved resistance to oxidizing agents in water. The pipe has a thin tubular core (inner layer) of high density polyethylene and an outer layer of crosslinked polyethylene. The pipe may optionally have an |
| 03/10/2004 | EP1396277A2 Conduit and method of forming |
| 03/10/2004 | EP1396276A2 Limb for breathing circuit |
| 03/10/2004 | EP1395623A1 Annealed polypropylene pipes and fittings |
| 03/10/2004 | CN2606228Y Improved spiral plastic corrugated pipes |
| 03/10/2004 | CN1480591A Penetration wall type vent-pipe applied to frozen soil engineering |
| 03/10/2004 | CN1141505C Nano high-property resin composite material pipeline and making method thereof |
| 03/09/2004 | US6702972 Method of making a kink-resistant catheter |
| 03/09/2004 | US6701967 Device having a radial partition in a double walled pipe intended for great depths |
| 03/09/2004 | US6701688 Reinforcing cage for an armored concrete element |
| 03/04/2004 | WO2004018929A1 Pipe, method and device for improved pipelines and similar objects |
| 03/03/2004 | EP1394456A1 Plastic lined metal pipe and method of manufacture |
| 03/03/2004 | EP1393891A1 Multilayer underground plastic pipe |
| 03/03/2004 | EP1393890A1 Multilayer plastic pipe |
| 03/03/2004 | EP1392557A2 Method of reinforcing an existing metal structure, method of reinforcing pipes and method of addition of spur lines to pipelines |
| 03/03/2004 | CN2605447Y Polyvinyl composite water-discharge pipe modified from nano materials |
| 03/03/2004 | CN1140713C Mining composite aluminium-plastic pipe |
| 03/03/2004 | CN1140399C Manufacture method of composite aluminium-plastic pipe and aluminium pipe orientnig and fitting unit |
| 03/02/2004 | US6699548 Thin-walled cylinder made from fibre-reinforced plastics material |
| 03/02/2004 | US6699539 To provide a fuel tank having a high durability and reliability against the corrosion at the insertion portion of the fuel filler pipe |
| 02/26/2004 | WO2004016976A1 Plastics pipe |
| 02/26/2004 | WO2004016421A1 Plastics pipe |
| 02/26/2004 | WO2004016420A1 Plastics pipe |
| 02/26/2004 | US20040039351 Flow adaptive aspiration tubing and devices |
| 02/26/2004 | US20040039124 Tubes obtained from a propylene polymer composition |
| 02/26/2004 | US20040037988 Composite pipe formed by a metallic pipe with inner lining resistant to aggressive agents, method for manufacturing said pipe and use thereof |
| 02/26/2004 | US20040035486 Automotive fluid tubing, especially for fuel and hydraulic fluid |
| 02/26/2004 | CA2438145A1 Composite pipe formed by a metallic pipe with inner lining resistant to aggressive agents, method for manufacturing said pipe, and use thereof |
| 02/25/2004 | EP1328748B1 Double-sheath pipe for transporting fluids, provided with a device for limiting propagation of an outer tube and method for limiting propagation |
| 02/25/2004 | CN1477324A Meiligai water-discharging pipe and its production method |
| 02/19/2004 | US20040033035 Fire resistant conduit insert for optical fiber cable |
| 02/19/2004 | US20040031532 Composite spoolable tube |
| 02/19/2004 | DE10307098B3 Composite heat exchange pipe has a metal pipe and a heat-conductive substance between an enamel cladding and a plastics mantle in a structure which withstands corrosion and pressure and high temperatures |
| 02/18/2004 | EP1389704A1 Plastic lined metal pipe and method of manufacture |
| 02/18/2004 | CN1476464A Polyethylene pipe resins and production thereof |
| 02/18/2004 | CN1475691A Continuous production device of steel plastic composite pipe having holed steel skeleton surface coated with binder |
| 02/12/2004 | WO2004013535A1 Compound pipe and method of repairing pipes |
| 02/12/2004 | US20040029522 Pliable air duct with dust and condensation repellency |
| 02/12/2004 | US20040028863 Interface substrate with adhesion promoter; cylinder tube of thermoplastic or elastomer material; elongated slits; sealing with pressure sensitive adhesive |
| 02/12/2004 | US20040028860 Polyefinic pipe having a chlorinated polyolefinic hollow core |
| 02/12/2004 | US20040026826 Thermoplastic sheet forming apparatus and method |
| 02/12/2004 | US20040026825 Preforming thermoplastic ducts |
| 02/12/2004 | US20040025955 Pipe construction system |
| 02/12/2004 | US20040025953 Flexible pipe and method of manufacturing same using metal reinforced tape |
| 02/11/2004 | EP1388412A1 Improvements in multilayered pipes |
| 02/11/2004 | EP1388407A2 Preforming thermoplastic ducts |
| 02/11/2004 | EP1196715B1 Device for limiting propagation of deformation in a wound double-walled tube |
| 02/11/2004 | CN1474854A Tubes obtained from a propylene polymer composition |
| 02/11/2004 | CN1137935C Semiconductor polyvinyldiene fluoride resin composition |
| 02/11/2004 | CN1137912C Polybutylenes resin, tubing and pipe fitting made from it |
| 02/10/2004 | US6689472 Apparatus for extrusion of polymers and plastic products formed with the apparatus |
| 02/10/2004 | US6689440 Metal tubing coated with multiple layers of polymeric materials |
| 02/10/2004 | US6689231 Seamless tubes comprising ferrite and/or austenite stainless steels formed by extrusion, then cold rolling and annealing having improved yield points, tensile strength, corrosion and creep resistance, for use in underwater oil apparatus |
| 02/05/2004 | WO2004011839A1 Sandwich pipes for ultra-deep waters |
| 02/05/2004 | WO2004011231A1 Resin-lined steel pipe and method for production thereof |
| 02/05/2004 | US20040022982 Impervious, chemically stable thermoplastic tubing and film |
| 02/05/2004 | US20040020547 Carbon black-containing crosslinked polyethylene pipe having resistance to chlorine and hypochlorous acid |
| 02/04/2004 | EP1386105A1 Reinforced pipe for a pressurised medium |
| 02/04/2004 | EP1386104A1 Reinforced plastic tube and method for making same |
| 02/04/2004 | CN2602244Y Hollow-walled helical noise reduction tube |
| 02/04/2004 | CN2602243Y Rotationally molded steel-plastic multiple tube with inside and outside anticorrosive coating |
| 02/03/2004 | US6686058 Zinc or zinc-nickel plating with phosphoric acid and trivalent chromium protective layer; prevents brittleness caused by thermal degradation; noncracking; anticorrosivity |
| 02/03/2004 | US6684910 Uncross-linked high density polyethylene |
| 01/29/2004 | WO2004010040A1 Carbon black-containing crosslinked polyethylene pipe having resistnce to chlorine and hypochlorous acid |
| 01/29/2004 | WO2004009356A1 Crosslinked polyethylene pipe having a high density polyethylene liner |
| 01/29/2004 | WO2004009342A1 Polyolefinic pipe having a chlorinated polyolefinic hollow core |
| 01/29/2004 | US20040018328 An automotive vehicle fuel pipes comprising an electroconductive interior layer made of polybutylene terephthalate and/or polybutylene naphthalate; lightweight, corrosion resistance, peel resistance, reusable |
| 01/29/2004 | DE10229109A1 Nahtloses Leitungsrohr aus hochfestem und hochzähem Stahl Seamless pipe made of high strength and high resistant steel |
| 01/29/2004 | CA2493873A1 Crosslinked polyethylene pipe having a high density polyethylene liner |
| 01/29/2004 | CA2493823A1 Polyolefinic pipe having a chlorinated polyolefinic hollow core |
| 01/28/2004 | EP1383615A1 Pipe coating |
| 01/28/2004 | EP0864060B1 Co-extruded multilayer plastic pipe |
| 01/28/2004 | CN1470794A Polypropylene straight tube with red copper lining |
| 01/22/2004 | WO2004007179A1 Method and device for producing a hollow body by rotation and resulting products |
| 01/22/2004 | WO2004007108A2 Sound-absorbing hollow body for an air supply |
| 01/22/2004 | US20040013835 A hose for motor fuel, consisting of polyamide layer, an ethylene-maleic anhydride copolymer layer, a high density polyethylene layer, a polyesterether copolymer elastomeric layer; lightweight, impervious |
| 01/22/2004 | US20040013823 Waterproofed and reinforced plastic object and method for making same |
| 01/22/2004 | DE19831898B4 Fluidleitung für Kraftstoffe und Kraftstoffdämpfe Fluid line for fuels and fuel vapors |
| 01/22/2004 | DE10231048A1 Schalldämmender Hohlkörper zur Luftführung Sound-insulating hollow body for air guidance |
| 01/22/2004 | DE10230781A1 Abstandselement für ein Haushaltsgerät Spacer for a household appliance |
| 01/22/2004 | CA2491315A1 Method and device for producing a hollow body by rotation and resulting products |
| 01/21/2004 | EP1382438A1 Plastic pipe |
| 01/21/2004 | EP1381706A1 Method and device for production of endless plastic hollow profiles |
| 01/20/2004 | US6680093 Multilayer composites |
| 01/15/2004 | WO2004004611A1 Conduit device |
| 01/15/2004 | US20040007279 Method for joining high-pressure composite pipes |
| 01/14/2004 | EP1380411A1 Flexible pipes made of thermoplastic polymer and polyolefin for oil and gas fields |
| 01/14/2004 | CN2599366Y Water-supply and discharge dual-purpose plastic winding pipe |
| 01/14/2004 | CN2599365Y Polyure anti-corrosion insulating pipe fitting |
| 01/14/2004 | CN2599364Y Electrothermal petroleum pipeline made of rare-earth composite material |
| 01/14/2004 | CN1134872C Multiple channel duct assembly for cable |