A composite torque pipe to metal fitting joint including concentric inner and outer shells formed with respective smooth conical surfaces projecting distally and respectively tapered radially inwardly and radially outwardly to form an annulus expanding in thickness for receipt of a tapered connector ring complementally shaped at one end of a composite pipe and bonded along the interface. The present invention includes selecting the sleeves with the corresponding shells and, forming the torque pipe with the tapered ring and bonding the tapered ring in the annulus.

A pipe joint (1) comprising: a tubular main body (10) having a flow path inside, which is formed of a resin comprising a copolymer having one or more selected from a vinyl cyanide monomer unit and an acrylic monomer unit, a rubber component, and an aromatic vinyl monomer unit; and a socket section (20a) integrally formed with the main body (10), wherein: the main body (10) has a foamed resin layer (30) and a non-foamed resin layer (50) covering the foamed resin layer (30); the amount of the rubber component in the foamed resin layer (30) as determined by pyrolysis-gas chromatography/mass spectrometry is within a specific range; the amount of the rubber component in the non-foamed resin layer (50) is within a specific range; and a ratio (L.sub.a/L.sub.a) of length (L.sub.a) from a base end (21a) to an opening end (22a) of the socket section (20a) to a thickness (d.sub.a) of the socket section (20a) at the opening end is 2.0 or more and 10.0 or less.

Techniques for implementing a pipeline system including a pipe segment and a potted pipe fitting. The pipe segment includes tubing having an internal pressure sheath layer, a reinforcement strip, and an outer sheath layer. The potted pipe fitting includes an outer fitting body disposed around a portion of the reinforcement strip, an inner fitting body disposed between the portion of the reinforcement strip and the internal pressure sheath layer, in which the inner fitting body directly abuts the internal pressure sheath layer at least up to a point where the reinforcement strip begins to flare away from the internal pressure sheath layer and a potting cavity of the potted pipe fitting is defined at least between an inner surface of the outer fitting body and an outer surface of the inner fitting body, and cured potting material implemented around the portion of the reinforcement strip in the potting cavity.

The present invention is a system and methods that facilitates the application of PVC primer (solvent) or PVC glue to the inner surfaces of PVC unions and the outer surface of PVC pipes. The invention consists of a PVC primer (solvent) or PVC glue reservoir, a method of pressurizing the reservoir, and forcing the PVC primer (solvent) or PVC glue through a series of tubes and holes in the apparatus and into a foam applicator which transfers the PVC primer (solvent) or PVC glue onto the inner surface or onto the outer surface of a PVC union or PVC pipe to a predetermined depth thus reducing waste of the PVC primer (solvent) or PVC glue. The foam application housing contains a foam applicator specifically for applying PVC primer (solvent) or PVC glue to either the inner surface of a PCV union or to the outer surface of a PVC pipe giving a uniform application of PVC primer (solvent) or PVC glue.

A metal to composite tube joint including an elongated interior fitting constructed with an exterior barrel, reduced in exterior diameter to form a distally facing annular shoulder and then projecting still further distally to form an interior sleeve having a radially outwardly facing bonding surface. An elongated metal outer sleeve formed proximally with a collar constructed for receipt over the barrel and increased in interior diameter and projecting distally to form an exterior sleeve having a radially inwardly facing bonding surface cooperating with the first bonding surface to form an annulus receiving an extremity of a composite tube and a bond bonding the extremity of the tube to the bonding surfaces.

A method of joining fiberglass-reinforced composite pipes includes joining an inner tube of each pipe by fusion to form a fused bond, joining fiber reinforced polymer tubes of each pipe by depositing a silica glass particle epoxy directly on the fused bond and on bonded edges of the fiber reinforced polymer tubes as a composition to cover tube edges and the fused inner tube bond, and curing the composition.

A fiber reinforced polymer composite joining member for joining sections of pipe together to form an elongated pipe is disclosed. A pipe joint and elongated pipe includes at least two pipe sections having ends that are joined together with the joining member is also disclosed. The pipe joint and elongated pipe are formed by joining abutting ends of adjacent pipe sections with the joining member without the need for the adjacent pipe sections to have other connection means, such as standard bell and spigot end connections. Also provided is a method for joining pipe sections with the joining member to make an elongated pipe.

In one embodiment, pipe connection joints are constructed using two materials, a flexible material and a rigid material, which are fixedly attached to form a pipe connection joint that provides a few degrees of flex in order to allow for mis-alignment of pipe ends and to reduce stress at the joint. The flexible pipe connection joints are made in a variety of nominal angles, configurations, and sizes and each of the individual pipe connection joints can be flexed in any direction a few degrees from the nominal angle.

Components of medical devices include polypropylene-poly(ethylene oxide) amphiphilic graft copolymers (PP-g-PEO) in their base polymer formulations. The base polymeric formulations comprise at least a polymer or co-polymer of propylene. These components are suitable for solvent-bonding with other components and enhance bond strength of the medical devices.

The invention relates to a device for guiding liquid, in particular a drainage channel, comprising a guiding section (10) and at least one functional region (11), wherein the guiding section (10) is formed of concrete, which has a binder and a filler having a first grain size K.sub.1, wherein the functional region (11) is formed at least partially of a filled reaction resin, which has a filler having a second grain size K.sub.2, wherein K.sub.2<K.sub.1.