A material for use in lining pipes is disclosed. A warp-knitted tubular fabric (24, 64) in which the stitch used (for example a tricot stitch) is of a type that reconfigures as the tube is expanded radially to contract longitudinally is sufficiently flexible and compressible to enable it to conform to pipe structures. The fabric of this invention is infused with resin, which is cured once the liner is in place within the pipe. Potentially, this fabric may be thinner than known prior art materials, but exhibits comparable strength and conformability, which are necessary characteristics in the repair or rehabilitation of pipes. The use of a thinner fabric material reduces constriction of the pipe bore by repair and also offers the potential for cheaper lining material, as less resin is required. The fabric may be knitted from glass fibre yarn, which is non-toxic and a stronger material than generally used in the prior art.

A hose assembly includes a flexible hose, an end connection attached to a first end of the hose, an insulation material wrapped onto the exterior surface of the hose, a cover surrounding the insulation material, and a cuff extending over and in engagement with at least a portion of the end connection and the cover. The insulation material, the cover, and the cuff each include fire resistant materials rated for continuous use at a temperature of at least about 90° C.

A composite armour for a flexible pipe includes a composite profile and a reinforcement tape. The composite profile includes longitudinally oriented reinforcement fibres embedded in a polymer matrix. The reinforcement tape includes a woven tape comprising fibres impregnated with a polymer material, in such a way that the weft thread of the reinforcement tape is orthogonal to the longitudinal direction of the profile, and the warp thread is parallel to the longitudinal direction of the profile.

A composite armour for a flexible pipe includes a composite profile and a reinforcement tape. The composite profile includes longitudinally oriented reinforcement fibres embedded in a polymer matrix. The reinforcement tape includes a woven tape comprising fibres impregnated with a polymer material, in such a way that the weft thread of the reinforcement tape is orthogonal to the longitudinal direction of the profile, and the warp thread is parallel to the longitudinal direction of the profile.

The present invention relates to a STEM with secondary curvature in extension and to methods of manufacture. In an aspect, an extendible member (10) is provided which is configurable between a coiled form (11) and an extended form (12). The member comprises a longitudinal shell resiliently biased in a slit tube form in which it has a first curvature relative to the hoop of slit tube and has a secondary curvature relative to the longitudinal axis of the member. The slit tube can be opened out at the slit to assume an open form in which it has a flattened cross section in transitioning from the extended form to the coiled form. The strain energy when coiled is lower than the peak strain energy in the member when transitioning from the extended to the coiled form.

A flexible air duct contains a uniformly-spaced reflective insulation system, with or without bulk insulation, a liner, and an outer jacket that would allow a reduced amount or no amount of bulk insulation to be used to obtain a desired R-value insulation. The flexible air duct can be used to move conditioned air to one or more desired locations.

A flexible air duct contains a uniformly-spaced reflective insulation system, with or without bulk insulation, a liner, and an outer jacket that would allow a reduced amount or no amount of bulk insulation to be used to obtain a desired R-value insulation. The flexible air duct can be used to move conditioned air to one or more desired locations.

The invention relates to a retractable pipe whose wall is formed of at least one flexible gas-impermeable and/or liquid-impermeable tape welded by its selvages in the form of a cylindrical helix and of at least one metal wire in the form of a cylindrical helix whose pitch is the same as the one formed by said band, characterized in that said tape is a double fabric textile comprising at least two regions where the two fabrics work together to delimit at least one inflatable zone, said textile being covered with a coating layer of a gas and/or liquid-impermeable material.

The invention relates to a retractable pipe whose wall is formed of at least one flexible gas-impermeable and/or liquid-impermeable tape welded by its selvages in the form of a cylindrical helix and of at least one metal wire in the form of a cylindrical helix whose pitch is the same as the one formed by said band, characterized in that said tape is a double fabric textile comprising at least two regions where the two fabrics work together to delimit at least one inflatable zone, said textile being covered with a coating layer of a gas and/or liquid-impermeable material.

A heat resistant hose is described. The hose may include a first outer protective and structural woven reinforcing layer comprising a first tubular fabric structure, a second inner protective and structural woven reinforcing layer comprising a second tubular fabric structure, where the second inner protective and structural woven reinforcing layer is within the first outer protective and structural woven reinforcing layer, a hose innermost extruded waterproofing layer comprising an elastomeric material, the hose layer being bonded to, adhered to, or impregnated into or through the second protective layer, the innermost extruded waterproofing layer is within the inner protective and structural woven reinforcing layer, and an intermediate layer interposed between the first outer protective and structural woven reinforcing layer and the second inner protective and structural woven reinforcing layer, the intermediate layer comprising a fabric laminated with a reflective material.