| Patents for F16L 58 - Protection of pipes or pipe fittings against corrosion or incrustation (5,790) |
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| 03/26/1998 | WO1998006511A3 Process for repairing plastic coatings of metal pipes |
| 03/24/1998 | US5731557 Fluid guiding element for blocking and damping noise propagating in main passages |
| 03/24/1998 | US5730472 Flangeless pipe joint and a process for manufacturing such a joint |
| 03/18/1998 | EP0829513A2 Grouting subsurface conduits |
| 03/04/1998 | CN1175302A Coal tar enamel-coated steel pipe and process for same |
| 02/26/1998 | WO1998007896A1 Use of halogenated-element acids for making coated metal pipes or coated reinforcing or prestressing steels |
| 02/26/1998 | DE19634222A1 Beschichtete Metallrohre, beschichteter Armierungsstahl oder Spannstahl Coated metal pipes, coated steel reinforcement or prestressing steel |
| 02/25/1998 | EP0824648A2 Refractory tile for open-spaced boiler tubes |
| 02/25/1998 | CN1174602A Pipe assembly |
| 02/24/1998 | US5720834 Method for covering a pipeline by wrapping |
| 02/19/1998 | WO1998006511A2 Process for repairing plastic coatings of metal pipes |
| 02/18/1998 | CN1037467C Pipe construction |
| 02/15/1998 | CA2213088A1 Elastomeric grouting of subsurface conduits |
| 02/11/1998 | EP0625251B1 Pipe construction |
| 02/05/1998 | DE19703193A1 Universal tape for winding around objects and forming shapes |
| 02/03/1998 | US5713393 Coal tar enamel coated steel pipe and process for same |
| 02/03/1998 | US5713392 Low friction slip-sleeve pipe wrap |
| 01/29/1998 | DE19630268A1 Pipeline length for underground laying |
| 01/28/1998 | EP0616671B1 Composite metal tube and method of making the same |
| 01/21/1998 | CN1171148A Polyamide- and polyelefin-based ducts for transporting and/or distributing gas |
| 01/14/1998 | EP0817938A1 Corrosion protection for steel pipes |
| 01/14/1998 | CN2272443Y Silicon diffused steel pipe with property of high-strength and stong boilling acid corrosion resisting |
| 01/14/1998 | CN1037025C Improved anti-seizure protection for joints, particularly suitable for petroleum sector |
| 01/13/1998 | US5707702 Epoxy pipelining composition and method of manufacture |
| 01/13/1998 | US5706866 Pipe member for buried conduit with corrosion protection and process therefor |
| 01/06/1998 | CA2049906C Coupling device for pipeline heating system |
| 12/31/1997 | WO1997049870A1 Anti-corrosive material |
| 12/29/1997 | EP0813473A1 Coating of metal surfaces |
| 12/24/1997 | WO1997048941A1 Pipe lining |
| 12/23/1997 | US5700530 Tape covering containing heat activated polymeric adhesive layer; for oil rig pipes |
| 12/23/1997 | US5700110 Method for lining a bent pipe |
| 12/10/1997 | EP0811128A1 Joining lined pipe items |
| 11/27/1997 | DE19641887A1 Processing tool for interior surface of laid piping |
| 11/26/1997 | CN2268831Y Spray corrosionproof coating apparatus for underground pipelines |
| 11/13/1997 | WO1997042444A1 Coating and process for coating pipelines |
| 11/13/1997 | DE19617971A1 Beschichtungsmaterial für Fernwärmeleitungen Coating material for district heating pipes |
| 11/12/1997 | EP0805744A1 Hot melt fluidized cladding of innerduct liner |
| 11/11/1997 | US5685344 Composite metal and method of making the same |
| 11/04/1997 | US5683530 Reinforcement methods utilizing high tensile strength composite bands |
| 10/23/1997 | DE19615935A1 Method of transporting natural gas in plastics pipelines |
| 10/21/1997 | US5678608 Anti-seizure protection for joints, particularly suitable for the petroleum sector |
| 10/15/1997 | EP0800629A1 Coal tar enamel-coated steel pipe and process for same |
| 10/14/1997 | US5677046 High tensile strength composite reinforcing bands |
| 10/08/1997 | EP0799639A1 Metallic surface having a heat-insulating layer, protected against metal-dusting corrosion |
| 10/08/1997 | EP0712352B1 Process for making a tubular cladding hose |
| 09/24/1997 | EP0796409A1 Improvements in or relating to valve or pipe components |
| 09/24/1997 | EP0796407A1 Pipe assembly |
| 09/18/1997 | WO1997034101A1 Improvements in or relating to bi-metal lined pipe |
| 09/17/1997 | CN1159851A Steel pipe joint having high galling resistance and surface treatment method thereof |
| 09/17/1997 | CN1159526A Threaded joint for metal tubes with internal coating |
| 09/16/1997 | US5667623 Method and apparatus for wrapping a joint of pipe with a web of concrete material |
| 09/11/1997 | CA2199680A1 Method and apparatus for providing a constant extrusion pressure for pipeline lining |
| 09/10/1997 | EP0721551B1 Piping sanitising process |
| 09/10/1997 | EP0693003B1 Three-coat coating system for metal pipes and method of coating the outside of a metal pipe with a three-coat coating of this kind |
| 09/09/1997 | US5665221 Electrical apparatus for controlling liquid contaminants |
| 09/07/1997 | CA2199443A1 Glass coated pipe system and testing method |
| 09/03/1997 | EP0793051A1 Corrosion inhibiting system for welding zones of steel pipelines |
| 09/02/1997 | US5662974 Superimposed coverings having increased stability |
| 09/02/1997 | US5662964 Process for coating the internal surface of hydrothermosanitary pipes, particularly made of aluminium, with resinous products and pipes obtained therewith |
| 08/27/1997 | EP0791153A1 Polyamide- and polyolefin-based ducts for transporting and/or distributing gas |
| 08/26/1997 | US5660705 Method of repairing a tube, such as a steam-generator tube, by electroplating lining |
| 08/26/1997 | US5660211 Galvanic corrosion resistant insulating pipe having excellent film adhesion |
| 08/21/1997 | WO1997014752A3 A polymerisable composition, a method of applying a polymerisable composition and a device for applying a polymerisable composition |
| 08/20/1997 | CN1157385A Multipurpose steel and plastic composite material support |
| 08/19/1997 | US5658613 Applying hot melt, low friction polymeric spray |
| 08/13/1997 | CN1035602C Anticorrosive products with high-temp tetrafluorated liner and resistance of high negative pressure, and its manufacturing method |
| 08/12/1997 | US5655796 For use in communicating a fluid media |
| 08/12/1997 | CA1339253C Lining material for pipelines |
| 08/07/1997 | WO1997027830A1 Universal tape coilable on living beings or on animated or inanimated objects |
| 08/05/1997 | US5653555 Multiple resin system for rehabilitating pipe |
| 07/30/1997 | EP0786616A1 Steel pipe joint having high galling resistance and surface treatment method thereof |
| 07/30/1997 | EP0722550B1 Fluid line |
| 07/30/1997 | EP0535187B1 Process for producing a metallic tube provided with a protective layer at least on its inner side |
| 07/30/1997 | CN1035529C Corrosion-resistant thermal-insulating steel pipe with corrugated black silicate jacket |
| 07/24/1997 | DE19610322A1 Passivation treatment of piping system for high-purity gas |
| 07/22/1997 | US5650103 Increased efficiency method for lining a pipe with a cement mortar |
| 07/22/1997 | US5649568 Glass fiber reinforced cement liners for pipelines and casings |
| 07/17/1997 | WO1997025567A1 Method for lining underground pipelines |
| 07/17/1997 | WO1997025202A1 Coating of metal surfaces |
| 07/17/1997 | WO1997025160A1 aETHOD OF PREVENTING CORROSION IN CONCRETE PIPE |
| 07/17/1997 | CA2242098A1 Method for lining underground pipelines |
| 07/17/1997 | CA2214002A1 Coating of metal surfaces |
| 07/09/1997 | EP0783088A2 Elongated tubular sheath |
| 07/09/1997 | EP0782680A1 Discharge pipe for discharging hot substances |
| 07/08/1997 | US5645784 Diameter reduction insertion method for lining tubular members |
| 06/25/1997 | EP0780621A1 Pipe element used for decreasing and attenuating noise propagated by main pipes and having a sound absorber and/or a branch pipe |
| 06/25/1997 | EP0780617A1 Screw connection for internally coated metal pipes |
| 06/25/1997 | EP0731892A4 Conduit coupling |
| 06/17/1997 | US5638871 Extruded multiple plastic layer coating bonded to a metal tube and process for making the same |
| 06/12/1997 | WO1997020668A1 Improved process and equipment for lining concrete pipes |
| 06/11/1997 | EP0778195A2 Antifouling wall structure and method of constructing it |
| 06/11/1997 | EP0777551A1 Process for renovating pipes |
| 06/10/1997 | US5636878 Pipe coupling |
| 06/04/1997 | EP0610349B1 Heat shrinkable sleeve for connecting a pipe and cable |
| 06/03/1997 | US5634672 Flangeless pipe joint |
| 05/21/1997 | CN2254501Y Stainless metal composite pipe |
| 05/15/1997 | WO1997017567A1 Coating of pipe joints |
| 05/14/1997 | CN1034882C Bellows used in expansion joint and flexible metal tubing |
| 05/07/1997 | EP0771987A1 Method of lining pipes |
| 05/07/1997 | EP0568627B1 Diameter reduction and angular insertion method for lining tubular members |