The invention provides a tube for use as part of a structural support pole, and a method for manufacturing a tube, comprising a plurality of tube perimeter sections, wherein each tube perimeter section of the first plurality of tube perimeter sections is formed by pultrusion, each tube perimeter section of the first plurality of tube perimeter sections having the same pultrusion cross-sectional shape, and wherein each tube perimeter section comprises: an outer surface; an inner surface; a side surface; and a cavity between the inner surface and the outer surface, wherein the cavity extends through the tube perimeter section. The side surface is adapted to be fastened to an adjacent side surface of an adjacent tube perimeter section, thereby to form an annular arrangement of tube perimeter sections. The tube further comprises a first filament, wherein the first filament is wound about the outer surfaces of the first plurality of tube perimeter sections arranged in an annular arrangement.

An intelligent module pipeline, an intelligent module helical pipeline winding machine and a winding method thereof. In the cross section of the pipeline, a plurality of intelligent modules (1) are clamped and helically wound end to end to form a circular pipeline; each of the intelligent module units is an arch-shaped module which is formed by injection molding or compression molding; the each intelligent module unit is provided a reinforcing rib structure inside, a fixing device for fixing and clamping from left to right on the side surfaces, and a clamping device for fixing and clamping end to end at the edges. An arc-shaped chute rail is provided on the front surface of a working panel of the winding machine; the arc-shaped chute rail is provided with at least one pair of feed rollers (107), and is further provided with a locking device (108) and a parallel twisting device (106); the same intelligent module units are arranged end to end on the arc-shaped chute rail, and then are locked by means of the locking device, to form a semicircular pipe diameter by means of the feed rollers; then the parallel twisting device twists the semicircular pipe diameter in parallel to change the winding rail; and the intelligent module units are wound in a staggered arrangement to form helical winding pipelines.

An intelligent module pipeline, an intelligent module helical pipeline winding machine and a winding method thereof. In the cross section of the pipeline, a plurality of intelligent modules (1) are clamped and helically wound end to end to form a circular pipeline; each of the intelligent module units is an arch-shaped module which is formed by injection molding or compression molding; the each intelligent module unit is provided a reinforcing rib structure inside, a fixing device for fixing and clamping from left to right on the side surfaces, and a clamping device for fixing and clamping end to end at the edges. An arc-shaped chute rail is provided on the front surface of a working panel of the winding machine; the arc-shaped chute rail is provided with at least one pair of feed rollers (107), and is further provided with a locking device (108) and a parallel twisting device (106); the same intelligent module units are arranged end to end on the arc-shaped chute rail, and then are locked by means of the locking device, to form a semicircular pipe diameter by means of the feed rollers; then the parallel twisting device twists the semicircular pipe diameter in parallel to change the winding rail; and the intelligent module units are wound in a staggered arrangement to form helical winding pipelines.

A member for use in undersea applications comprising a plurality of conduits assembled into a bundle; the bundle being wrapped with a pressure-sensitive tape comprising a backing, a layer of corrosion-resistant filaments on one surface of the backing, and pressure-sensitive adhesive layer that coats the filaments and binds them to the backing.

A member for use in undersea applications comprising a plurality of conduits assembled into a bundle; the bundle being wrapped with a pressure-sensitive tape comprising a backing, a layer of corrosion-resistant filaments on one surface of the backing, and pressure-sensitive adhesive layer that coats the filaments and binds them to the backing.

A member for use in undersea applications comprising a plurality of conduits assembled into a bundle; the bundle being wrapped with a pressure-sensitive tape comprising a backing, a layer of corrosion-resistant yarns on one surface of the backing, and pressure-sensitive adhesive layer that coats the corrosion-resistant yarns and binds them to the backing.

A member for use in undersea applications comprising a plurality of conduits assembled into a bundle; the bundle being wrapped with a pressure-sensitive tape comprising a backing, a layer of corrosion-resistant yarns on one surface of the backing, and pressure-sensitive adhesive layer that coats the corrosion-resistant yarns and binds them to the backing.

A multilayer structure for transporting or storing gas or for exploiting oil or gas deposits under the sea, including, from the inside to the outside, at least one sealing layer and at least one composite reinforcing layer, the innermost composite reinforcing layer being welded to the outermost adjacent sealing layer, the sealing layers of a composition including at least one semi-crystalline thermoplastic polymer, the Tm of which is less than 280° C., wherein at least one of the composite reinforcing layers of a fibrous material in the form of continuous fibers impregnated with a composition including at least one thermoplastic polymer, the thermoplastic polymer having a Tg greater than the maximum temperature of use of the structure (Tu), with Tg≥Tu+20° C., Tu being greater than 50° C., and a multilayer structure selected from a reservoir, a pipe or a tube for transporting or storing hydrogen being excluded.

A pipe includes an elongate strip wound into a tubular pipe form with the upper surface and the ribs at an exterior of the tubular pipe form, and with a first portion of a first side overlapping a first portion of a second side along a helical joint. A plastic seam weld is applied between the overlapping first portions for bonding the overlapping first portions together. A plastic overweld extends over the overlapping first portions and over both a second portion of the first side and a second portion of the second side. The second portion of the first side is adjacent to the first portion of the first side and does not overlap with any part of the second side, and the second portion of the second side is adjacent to the first portion of the second side and does not overlap any part of the first side.

A thermoplastic product includes a fabric-based reinforcing sheet and a polymerized thermoplastic material. The fabric-based reinforcing sheet is wound about a mandrel to form a plurality of layers having a cross-sectional shape that corresponds to the mandrel. The fabric-based reinforcing sheet includes a plurality of fiber bundles, which may have a bidirectional orientation or configuration. A polymerized thermoplastic material is disposed within each layer of the fabric-based reinforcing sheet. The polymerized thermoplastic material bonds each layer of the fabric-based reinforcing sheet to an adjacent layer.