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DE4416434A1 Thermoplastic tube and method for manufacturing a reinforced by a thermoplastic tube Drahtkarkasse  
A thermoplastic pipes reinforced with a wire framework by extrusion moulding, comprises transverse spiral reinforcement (3) coiled onto longitudinal reinforcing strings (2) arranged along the...
DE4321575C1 Corrugated pipe made of thermoplastic material  
With a corrugated pipe made of thermoplastics material for use as a fluid conduit in a motor vehicle, the corrugations, at least in one longitudinal region 4, 5 of the corrugated pipe which has a...
DE4315177A1 Pipeline of plastic  
In the case of a pipeline of plastic, in particular for flammable fluids, which has an alloy of a polyamide and one other component, to achieve a lower permeability for fluids, in particular...
DE4413587A1 Pivot joint  
Pivot joint (1) as connection piece between two components, at least one component being mounted such that it can be rotated about its horizontal axis. The essence of the invention consists in...
DE4330855C1 Use of a plastics pipe as a crash-protected motor-vehicle fuel line  
Use of an extruded, smooth-walled plastics pipe made of a thermoplastic pipe material customary for motor vehicles, having an outside diameter of less than 15 mm and having an adequate wall...
DE4331194C1 Double-walled pipeline system  
The invention relates to a double-walled pipeline system (10), in particular for an air/waste-gas chimney, exhibiting an outer pipe system (14) and an inner pipe system (12) which is arranged...
DE4309999A1 Profiled pipe of crosslinked polyolefin for the renewal of pipelines  
For the renewal of predetermined lengths of leaking or damaged pipelines, use is made of a pipe of thermoelastic crosslinked polyolefin which has been thermoelastically deformed at temperatures...
DE4307713A1 Flexible plastic hose  
The invention relates to a flexible plastic hose having at least one element (3) which serves, at the same time, as a reinforcement insert and is arranged between an internally smooth hose inner...
DE4305922A1 Extruded element of plastic  
An extruded element, in particular a hollow-cylindrical pipe or sleeve, of plastic as a support for strip materials or information media in tape form, having a core of a thermoplastic, determining...
DE4405235A1 Process and apparatus for forming ribs with lateral bulges on a plastics pipe, and a plastics pipe  
The invention relates to a process and an apparatus for forming ribs with lateral bulges on a plastics pipe. The bulges are formed by elongate rollers (10), which surround the pipe and are...
DE4302049A1 Coaxial plastics tube  
The pliably elastic coaxial tube structure, with shape retention, is made of plastics with each of the separate distance holders (3) shaped at only one tube part (1,2) of the coaxial tube...
DE4238696A1 Fluid carrier pipe - has projections from inner layer embedded in thermoplastics material of the outer layer  
The fluid carrier pipe, of two layers (1,2), has projections (3) on the outer surface of the inner layer (2) to be embedded in the thermoplastics material of the outer layer (1). The...
DE4238605A1 Flexible rugged tubing e.g. for petrol pumps or tankers - consists of innermost corrugated thermoplastic liner, reinforcing layer and outermost thermoplastic covering including e.g. fluoropolymer  
Flexible tubing has an innermost thermoplastic tub, at least one surrounding reinforcing layer, and an outermost thermoplastic covering, the innermost tube being corrugated and pref made of...
DE4240364C1 Impact-damper with sliding tubes for vehicles - has tubes with evenly spaced openings and coated with elastic material on inside and outside  
Openings (1) are formed in the tubes, which are coated with elastic material (5) on the inside and outside. The tubes can be rolled from sheet-metal. Rubber or plastics can be used as the coating...
DE4237477A1 Tube with leak monitor, esp. for carrying conducting, corrosive liquids - contains sensor and return wires of leak detector in or on lining connecting inner and outer layers  
The tubular component (1) has a liquid-tight inner layer (2) of thermoplastic material and a supporting outer layer (6) of fibre reinforced plastic joined together by a lining (3). It also...
DE4238697C1 Application for ribbed thermoplastics fluid pipe - is cut in sections with rib of each section fitting and engaging in fluid pipe coupling, rib acting as retainer engaging coupling cut section  
The pipe has several circumferential solid ribs (2) spread out over its length. The pipe is made in a continuous process by a corrugator or by an injection moulding process. Sections of the...
DE4235825C1 Faserarmiertes plastic pipe  
The pipe proposed consists of a main body (2) made of fibre-reinforced duroplast, a liner (3) made of an inner thermoplastic sheet (32) and an aluminium sheet (31), plus an outer gel coating (4)....
DE4230795A1 Hot water pipe between e.g. boiler and end equipment - provides support surface for electric heating band extending along length of hot water line  
The installation pipe (1) is used for a hot water line extending between a hot water supply and a number of utilisation points, with an electric heating band (3) extending along its length for...
DE4221926A1 Gas delivery pipe of one-piece plastic construction - is strongly expandable and compressible in direction of longitudinal axis without noticeable tensions inside it  
Between the outside cylindrical sections (1) of the pipe at least one wave-form pipe section (2) or a bellows-shaped section is arranged. The pipe comprises several hollow cylindrical sections...
DE4221568A1 Thermoplastic tube with antistatic equipment - has internal longitudinal strip of electroconductive thermoplastic machined into tube wall  
Up to 50% of the inner tube wall is covered by the electrically conductive plastic strip. The tube itself is of one layer construction or consists of several layers. The machined-in strip contains...
DE4202514A1 Plastics and metal tubing system with joints - has embossed sections at end of metal tubes pressing into plastics parts  
The system contains metal pipes surrounded by plastics pipes and plastics nodal element,e.g.elbows,T-members etc.The embossed metal sections (4,7) are covered by the plastics parts of two axially...
DE4233513A1 Pipeline for exhaust air systems - has several connectable pipe sections and tension ring  
Each straight pipe section (1) has, on its outer surface, at least one tension ring (2) with profiled cross-section which can be U-shaped, L-shaped, T-shaped, or trapezoidal. The tension ring is...
DE4128654A1 Laminar plastic pipe - comprises intermediate pipe of different characteristics to corrugated outer one also joined to inner one  
The laminar plastic pipe is partic. for sewage or cables, having a smooth inner surface to which a corrugated outer pipe is joined. Between the two is an intermediate pipe joined to both, and...
DE4128057A1 Twin wall rigid plastic pipe mfr. esp. for waste water - by co-extruding smooth wall inner and wave profiled outer wall and injection moulding socket and plug ends, etc.  
A process for mfg. plastic pipes, esp. for waste water. The pipes comprise a smooth inner pipe connected to a wave-profiled outer pipe. One end of the pipe has a larger dia. socket allowing...
DE4123617A1 DEVICE FOR TRANSPORT OF SUBSTANCES  
The description relates to a device for the transport of materials consisting of at least one first pipe (I) and a second pipe (II), each with a hexagonal honeycomb flow cross-section, whereby the...
DE4132984C1 Gas and liquid impermeable tubing - comprises core tube of polyethylene@ with polyvinylidene fluoride casing  
Synthetic plastic pipe comprises a core tube (2) and an outer polyvinylidenefluoride (PVDF) tube (3). Pref. the core tube is of polyethylene, opt. with an aluminium outer tube; the PVDF layer is...
DE4133802C1 Thermoplastics thrust pipe - has respective plug and socket ends with opposed angle cone design so it can mate with next section  
The thrust pipe is made up of several thermoplastics sections having respective plug and socket ends in an opposed angle cone design so that socket and plug mate positively once installed. The...
DE4111529A1 Antistatic polymer pipe esp. for combustible medium e.g. for fuel pipe - has narrow metal tape on inside to earth voltage or charge  
Hose or pipe, esp. for combustible media, consists of antistatic polymer with cold impact strength and low electrical surface resistance, which is stable towards peroxide. The novelty is that it...
DE4124825C1 Polyolefin tube with improved abrasion resistance - contains glass on quartz microparticles in walls and/or outer layer  
A polyolefin tube has an addition of microparticles, pref. of glass or quartz in the tube walls and/or in an outer layer of the tube to improve abrasion resistance. ADVANTAGE - The tube has...
DE4040400A1 Double skinned plastics thermally insulated pipeline for hot water heating system - is made from recycled plastics waste with spacers and inner linear  
The thermally insulated pipeline has inner and outer plastics pipes joined by longitudinal ribs. The pipes and ribs are made from lost cost unsorted plastics waste recycled. The plastics can be...
DE4139649A1 Thick-walled plastic tube - obtd. by extruding two tubes vertically down into cooling bath and comprising thick scrap plastic outer and virgin polyethylene@ inner  
The invention relates to a thick-walled plastic tube and a process and appts. for mfr.. The pipe comprises at least two concentric coextruded pipes fused together in the molten state. Ungraded...
DE4118354A1 Flat sheet with high bending resistance - has rows of rectangular areas with convex cross=sections  
The rigidity of a flat sheet (1) of material such as metal, plastics or fibre reinforced plastics, is increased by forming rows of convex rectangular areas. These areas are so shaped that the...
DE4005772A1 Braided rod or tube mfr. - uses resin immersed fibre strands spirally wound around core to give braided body with high torsional strength  
A rod-shaped body is formed by a number of spiral windings of fibre strands immersed in synthetic resin wound in pairs round a core at a pitch angle of 30-60 deg., with the same pitch in all the...
DE4039909A1 Steel and plastic pipes joint at entry to house - steel internal pipe has rediced end profile around which plastic network pipe is formed by steel sleeve and external protective sleeve  
A pipe joint between a plastic pipe network outside a building and a steel pipe within a building. The network plastic pipe is formed onto the end of the steel pipe, which has a raised...
DE3939570A1 Hole boring guide for attaching pipe branches - has plastic body with radial union and is welded to current pipe by heater mat with conductor wire arrangement with wire-free central zone  
A hole boring guide for plastic pipes consists of a split ring with a radially branching tubular union. On the inner wall of the ring is an electrically conducting mat with parallel aligned wires...
DE3907785A1 Plastic pipe and process for its production  
Water lines, air lines and similar lines comprising plastic piping, for example polypropylene piping, are being used increasingly in sanitary and heating installations in residential and office...
DE3938362C1 Applying metallic coating to FRP pipes - by spraying droplets at high velocity and adjustable impact angle  
A metallic coating is applied on the thread sections (I), formed at the ends as a peg- or socket part, of plastics pipes, esp. fibre-reinforced plastics pipes, which can be screwed together under...
DE3906752C1 Plastic pipe, in particular for sewage  
Plastic sewage pipe, having a smooth inner pipe and a corrugated outer pipe connected thereto, which can be connected, via socket connections, to an identical or a different conventional,...
DE3820254A1 Plastic pipe  
In the plastic pipe, the barrier layer (6) is formed by fluorination of the outer layer of the pipe (4) and, if appropriate, of the inner layer of the coextruded cladding layer (8). This produces...
DE3821723C1 Multilayer motor vehicle pipe produced by coextrusion  
Multilayer motor vehicle pipe produced by coextrusion and made of plastic, in particular for conveying an alcoholic medium, comprising at least one polyamide pipe having a closed coating of a...
DE3827092C1 Use of a multi-layered plastic pipe, produced by coextrusion, as a heat-resistant pipe for fuel-carrying lines in motor vehicles  
Use of a multi-layered alcohol-resistant plastic pipe, produced by coextrusion, having a thin inner layer of polyamide, a thin layer of polyvinyl alcohol outwardly adjoining it, and adjoining...
DE3805072A1 Plastic collector pipes  
According to the invention, plastic collector pipes, in particular for landfills, which are of such a height that it is possible to walk in them are deformed in the warm state, using a starting...
DE3823309A1 METHOD FOR PRODUCING METAL PIPES WITH TIN OR TIN BASED ALLOY COATED ARE  
Metal pipes coated with tin or tin based alloy are manufactured by inserting tin or tin based coating material eg as a wire, thin sheets or powder into the metal pipe, raising the temperature...
DE3722659A1 Prefabricated conduit  
In the case of a prefabricated hose connection, especially one between units of an internal combustion engine, consisting of an extruded tube which is permanently bent, cut to length and provided...
DE3715251A1 MOTOR VEHICLE PIPELINE FOR AN ALCOHOLIC MEDIUM FUEHRUNG  
A motor vehicle pipeline (1) particularly resistant to alcoholic medium, consists of polyamide pipe (2) with an internal seamless coating (3), thin compared with the pipe wall thickness,...
DE3714592A1 Safety pipe consisting of a thermoplastic material  
The invention relates to a safety pipe which consists of a uniform thermoplastic material and whose uniform pipe casing exhibits traces of impurities. The uniform pipe casing is made up of a...
DE3640687A1 Pipeline, in particular of a vacuum cleaner  
The invention relates to a pipeline, in particular of a vacuum cleaner, having two pipe portions which overlap in the axial direction and are releasably fastened to one another in a manner...
DE3638136A1 Double-walled plastic pipe and use thereof  
A description is given of a double-walled pipe of thermoplastic material with a metallic reinforcing layer between the walls, in which the reinforcing layer comprises a multiplicity of metal wires...
DE3636737A1 Extruded plastic pipe  
The extruded plastic pipe is characterized by an electrically conducting layer (3), onto which a thin outer layer (5) of plastic is extruded as a dielectric. The electrically conducting layer may...
DE3634265A1 Pipe connection  
The invention relates to a pipe connection having a sealing ring which is supported, by means of a radially interior surface, on the pipe wall and, by means of a radially exterior surface and an...