Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 651 - 700 out of 7,008

Document Document Title
WO/2000/020183A1
The invention concerns a tube internally coated with a cement composition comprising a layer of cement mortar and a method for making such a tube. The invention aims at reducing or preventing the release of ions, and more generally, the ...  
WO/2000/011390A1
Two pipe sections (1-4, 31, 32) of a high-pressure line each comprise a fluid-tight inner jacket (9) made of a thermoplastic material and a reinforced outer jacket (10). The innner jackets are attached to one another by means of a fluid-...  
WO/2000/008373A1
The invention concerns a device for protecting welded parting lines (3) between metal tube sections (1, 1') designed to constitute a piping system such as a pipeline, which tube sections (1, 1') are coated with a protective material laye...  
WO/2000/006932A2
The invention relates to a method for redeveloping or renovating sewers using a large quantity of scrap rubber. Pipes with low inherent stability are produced from scrap rubber and plastic and then introduced into old sewer pipes or duct...  
WO/1999/065996A1
The present invention can be used for protecting steel pipes against corrosion, in particular those used in thermal networks. This invention essentially relates to a fine-grain mixture used for applying an anti-corrosion coating on the i...  
WO/1999/059730A1
The invention relates to a method and a device for applying a plastic layer consisting of at least two components to the inner surface of a hollow body. A coating device which has been introduced into the hollow body travels through the ...  
WO/1999/058326A1
This invention relates to a laminate for lining a passage, entirely or partially surrounded by walls, on or under the ground, comprising at least one layer of a reinforcement of continuous fibres, curable resin and a plastic foil or a pl...  
WO1999043974A9
A corrosion-resistant threaded connection including a first tubular member having an outer metal tube (12) of corrosion-prone material and an inner metal lining (38) of corrosion-resistant material, the first tubular member (12) forming ...  
WO1999049171A3
The invention concerns an integral threaded or sleeved assembly of two metal tubes provided or not with an internal coating and in particular designed to contain internally a corrosive fluid. The assembly male element(s) (1) each compris...  
WO/1999/056055A1
A method of protecting a metal pipe against environmental corrosion by applying a covering thereto, wherein the covering comprises an inner layer for forming a bond with the pipe, an outer organic layer, and an intermediate layer, fully ...  
WO/1999/054654A1
A flexible protective sleeve (10) for use in protecting an elongated member comprises a generally tubular wall (12) for at least substantially surrounding the member. The sleeve (10) also comprises permanent adhesive (26) adhered to an i...  
WO/1999/053232A1
A screw joint for oil well piping excellent in sealing property, wherein a load flank $g(u)1 meets specified requirements, such a form that the inclined surfaces of a trapezoidal screw on both sides are brought into contact simultaneousl...  
WO/1999/049171A2
The invention concerns an integral threaded or sleeved assembly of two metal tubes provided or not with an internal coating and in particular designed to contain internally a corrosive fluid. The assembly male element(s) (1) each compris...  
WO/1999/049259A1
The invention concerns an ultra dense composite section for flexible pipe armouring, comprising longitudinal carbon filament slivers (3) provided within a thermoplastic or thermosetting matrix (4) in the form of a flat ribbon (2) with su...  
WO/1999/046534A1
A sheath (10) for at least partially covering a tubular member, the sheath including a helically wound strip (12) having an electrically conductive portion (16) extending through the strip from an inner surface (18) of the strip (12) to ...  
WO/1999/043974A1
A corrosion-resistant threaded connection including a first tubular member having an outer metal tube (12) of corrosion-prone material and an inner metal lining (38) of corrosion-resistant material, the first tubular member (12) forming ...  
WO/1999/035434A1
A method of protecting a metal article (3') from corrosion. The method comprises applying to an external surface of the article (3') a corrosion protector (10), the corrosion protector (10) comprising a corrosion resistant flexible film ...  
WO/1999/034032A1
A device for treating water that circulates in a closed conduit system, said device comprising a combination of a degasifier, on the one hand, and a corrosion inhibitor, on the other hand. The degasifier includes a tubular member (10) wh...  
WO/1999/025899A1
An account has been given for corrosion-protection of metal constructions, e.g. in the form of a pipeline consisting of interconnected pipelines (10, 10a, 10b, 10c, 10d) and, possibly, incorporatable in a larger pipe system. Said metal c...  
WO/1999/021916A1
Polypropylene composition comprising by weight (A) 60-90 % of at least one heavy mineral filler having a specific weight greater than or equal to 3; (B) 0.1-4 % of a filler compatibilizer; and (C) 10-40 % of a heterophasic polyolefin com...  
WO/1999/019660A1
The invention concerns a product for coating the internal surface of a conduit (1), in particular a metal conduit, comprising an internal wall (4) with strong curvature. Said product comprises a solid filler and a liquid. The liquid is a...  
WO/1999/017049A1
The present invention may be used for protecting main ducts against corrosion and for increasing their pressure-bearing capacity. The method of the present invention comprises applying a polymeric material to the inner surface of the duc...  
WO/1998/051954A1
A pipe coupling (11) is shown for connecting two pipelines (17, 19) of different materials together in a well environment which prevents deterioration of the pipe due to galvanic action. The couple (11) achieves its purpose by coating th...  
WO/1998/044286A1
The invention concerns metal, preferably copper, tubes coated with a protective film consisting of a composition based on polyvinyl chloride, stabilised with a lead free primary heat-stabiliser and comprising at least a blowing agent.  
WO/1998/036899A1
A coated metal tubing arrangement comprises a metal tube (10). An inner layer (12) of a first polymeric material is bonded to the tube (10) to provide corrosion protection. The first polymeric material has a high crystallinity, a dampeni...  
WO/1998/033749A1
A cementitious composition (1) which, in the hardened state, acts as a low leaching coating in low alkalinity and low hardness waters. The composition comprises at least one cement and a highly reactive pozzolan. The cementitious composi...  
WO/1998/024560A1
Process for repairing plastic coatings of metal pipes that allows one to obtain said repair using only a flame as the source of heat, comprising the application of protective shields during specific operating phases.  
WO/1998/025063A1
The invention concerns a flexible conduit comprising an internal gasproof undulating metal tube (1), the wall of which has helical undulations (8), the external surface of said internal tube having at least concave (10) and convex (11) r...  
WO/1998/012465A1
The present invention relates to a coating applied onto the internal surface of a pipe, wherein said coating consists of two coaxial tubular and film-type envelopes (2, 3) made of a thermoplastic polymer. The outer envelope (2) rests aga...  
WO1998006511A3  
WO/1998/007896A1
The invention relates to using halogenated-element acids and/or salts thereof in chromate-free materials/substances designed for metal surface preprocessing to manufacture coated metal pipes or coated reinforcing or prestressing steels, ...  
WO/1998/006511A2
Process for repairing plastic coatings of metal pipes, that allows the repairs to be done in a very short time, by applying, in specific operating phases, a polyolefin adhesive in powder form and polyolefin tapes, and then applying heat ...  
WO/1997/049870A1
An anti-corrosive material used to protect buried conduits from corrosion, preferably characterized by a multi-layered co-extruded, calendered, or laminated polyolefin. The material has an outer layer characterized by a low density polye...  
WO/1997/048941A1
Thermal insulation and corrosion resistant covering for steel pipe transporting oil, gas or other fluids with high temperature. The concept comprises a steel pipe (1) surrounded by a plastic pipe (3) and the space between the steel pipe ...  
WO/1997/042444A1
This invention concerns a coating material which can be used to rehabilitate the inside of pipelines, especially long-distance energy pipelines. Moreover, the invention concerns a coating produced out of the coating material and a proces...  
WO/1997/034101A1
A bi-metal lined pipe and methods of forming such a pipe suitable for spooling onto a reel for marine pipelaying applications, the pipe comprising a carbon steel outer pipe and a liner of corrosion resistant metal, in which the liner is ...  
WO1997014752A3  
WO/1997/027830A1
The invention concerns a universal tape that has a first adhesive closure tape (5) along one edge of the upper side (3) of the tape (1) that is congruent with the edge of the tape (1) in the longitudinal direction and is sub-divided into...  
WO/1997/025567A1
Method for renovation of pipelines, comprising introduction of a lining pipe into an existing pipeline, said lining pipe having a length corresponding to the length to be renovated, and consisting of a fusible polymer in a folded conditi...  
WO/1997/025160A1
A method of treating concrete pipe (10) is carried out by providing an aqueous lime slurry supply having a lime solids content above 35 % by weight of the slurry. This is mixed within an amount of dispersing agent and may contain an alka...  
WO/1997/025202A1
The invention relates to a metal surface coated with a thermoplastic polymer and comprising at least one adhesive arranged between the metal surface and the thermoplastic polymer, said adhesive having a VICAT point lower than or at the m...  
WO/1997/020668A1
The present invention relates to an improved process and the relative equipment for lining concrete pipes and particularly ducts for sewage and irrigation uses. Said lining, consisting of bisphenolic, isophthalic, epoxydic, polyurethanic...  
WO/1997/017567A1
There is provided a procedure and an arrangement for coating a bare joint (10) between two pipes (12, 14) otherwise coated with a pipe-coating (16, 18). The procedure and arrangement involves providing two pipes (12, 14) precoated with a...  
WO/1997/014752A2
A polymerisable composition comprising a mixture of an unsaturated oligoester, a cross-linking agent and a complex surface-active agent, wherein the complex surface-active agent comprises an oxyethylated alkyl phenol ester having the gen...  
WO/1997/012209A1
A flow tube (10) has a metal outer tube (12) and is lined (26) with an ETFE fluoropolymer that is resistant to corrosive chemicals and mechanical damage even at high temperatures. The inner surface (22) of the metal tube (12) is coated w...  
WO1997001429A3  
WO/1997/004949A1
A system for protecting sections of pipe or tubing (100) from corrosion includes depositing a continuous, low-porosity, non-corrosive, metallized layer (12) within the end portions (102) of a section of pipe or tubing (100) and on its en...  
WO/1997/001429A2
An extrusion apparatus and method, and a tubular product and a pipe made of several different materials. The extrusion apparatus according to the invention comprises at least one stator (1, 6, 10), at least one rotor (2, 2a, 2b), and at ...  
WO/1996/029535A1
The invention relates to corrosion protection for the weld points on plastic-coated steel pipes without any coating at the weld points. To the uncoated region are applied laminates of fibre-reinforced, cured, unsaturated polyester resins...  
WO/1996/028686A1
A copper alloy pipe for water/hot water supply, equipped with a protective film on the inner surface thereof includes a pipe main body made of a copper alloy containing at least 0.02 wt.%, in total, of at least one of Zn and Mn, not grea...  

Matches 651 - 700 out of 7,008