A wire harness pipe includes an aluminum pipe, a heat shrink tube that coats the outer surface side of the aluminum pipe, and an adhesive layer that is disposed between the aluminum pipe and the heat shrink tube.

A wire harness pipe includes an aluminum pipe, a heat shrink tube that coats the outer surface side of the aluminum pipe, and an adhesive layer that is disposed between the aluminum pipe and the heat shrink tube.

A connector assembly (608) for a length of corrugated tubing (601) having an inner corrugated element (602) and an outer flexible sheath layer (603). The connector assembly (608) comprises a fitting (609) including a fluid-flow passage and an abutment surface (612) for the corrugated tubing (601) to seat thereon; axial loading means operably connectable to the fitting (609), the axial loading means including a connector (613) and a collet (610), the collet (610) having a radially inward protruding clamping element (611) for insertion into a trough (606) of the inner corrugated element (602), and a sheath-contact portion (625) for engaging the outer sheath layer (603), so that, when the connector (613) moves the collet (610) into engagement with the fitting (609), the collet (610) causes the corrugated element (602) to move onto the abutment surface (612) whilst maintaining engagement with the outer sheath layer (603). The sheath-contact portion (625) is axially positionable between the inner corrugated element (602) and the outer sheath layer (603) of the corrugated tubing (601), in use.

A connector assembly (608) for a length of corrugated tubing (601) having an inner corrugated element (602) and an outer flexible sheath layer (603). The connector assembly (608) comprises a fitting (609) including a fluid-flow passage and an abutment surface (612) for the corrugated tubing (601) to seat thereon; axial loading means operably connectable to the fitting (609), the axial loading means including a connector (613) and a collet (610), the collet (610) having a radially inward protruding clamping element (611) for insertion into a trough (606) of the inner corrugated element (602), and a sheath-contact portion (625) for engaging the outer sheath layer (603), so that, when the connector (613) moves the collet (610) into engagement with the fitting (609), the collet (610) causes the corrugated element (602) to move onto the abutment surface (612) whilst maintaining engagement with the outer sheath layer (603). The sheath-contact portion (625) is axially positionable between the inner corrugated element (602) and the outer sheath layer (603) of the corrugated tubing (601), in use.

A method protects a field joint of a pipeline, where chamfered edges of thermally-insulating parent coatings on conjoined pipe lengths are in mutual opposition about a longitudinally-extending gap. The method includes manufacturing an hourglass-shaped inner layer around the pipe lengths, which layer may be moulded. The inner layer extends longitudinally along the gap between the chamfered edges and at least partially overlies the chamfered edges. A thermally-insulating solid insert is assembled from two or more parts to lie in the gap surrounding the inner layer, and pressure is applied radially inwardly from the insert to the inner layer. An outer layer of molten material is manufactured around the insert to form a watertight barrier and to form one or more melted interfaces with the inner layer. Corresponding field joint arrangements are also disclosed.

A coated metal pipe for use as an automotive fluid transport tube is provided comprising: a single or double walled tubing formed into a circular cross-sectional profile; at least one intermediate layer primer layer applied over said tubing: and an outer layer comprising a polyamide incorporating an immiscible additive. The immiscible additive is selected from Ultra High Molecular Weight (UHMW) silicones, UHMW polyethylene (UHMW-PE), polytetrafluoroethylene (PTFE) and mixtures thereof.

A coated metal pipe for use as an automotive fluid transport tube is provided comprising: a single or double walled tubing formed into a circular cross-sectional profile; at least one intermediate layer primer layer applied over said tubing: and an outer layer comprising a polyamide incorporating an immiscible additive. The immiscible additive is selected from Ultra High Molecular Weight (UHMW) silicones, UHMW polyethylene (UHMW-PE), polytetrafluoroethylene (PTFE) and mixtures thereof.

Disclosed is a water treatment apparatus including a pipe. Elements disposed in the pipe are respectively made of lead-free brass and nontoxic ultra high molecular weight polyethylene instead of brass and plastic polyethylene that are conventionally used materials. Therefore, when the elements come into contact with water, neither heavy metals, such as lead (Pb), nor organic and inorganic substances harmful to the human body are produced.

Disclosed is a water treatment apparatus including a pipe. Elements disposed in the pipe are respectively made of lead-free brass and nontoxic ultra high molecular weight polyethylene instead of brass and plastic polyethylene that are conventionally used materials. Therefore, when the elements come into contact with water, neither heavy metals, such as lead (Pb), nor organic and inorganic substances harmful to the human body are produced.

A composite pipe structure including a pair of structural polymer layers disposed on opposed sides of a central metal layer. In a preferred embodiment, the thickness of the composite structure is comprised of approximately 40%-60% of the metal layer, with the remaining balance comprised of the pair of polymer layers.