An apparatus includes a strength member including a core formed of a composite material, and an encapsulation layer disposed around the core. A conductor layer is disposed around the strength member. A coating is disposed on the conductor layer. The coating is formulated to have a solar absorptivity of less than 0.5 at a wavelength of less than 2.5 microns, and a radiative emissivity of greater than 0.5 at a wavelength in a range of 2.5 microns to 15 microns, at an operating temperature in a range of 60 degrees Celsius to 250 degrees Celsius. The coating may have an erosion resistance that is at least 5% greater than an erosion resistance of aluminum or aluminum alloys.

An apparatus includes a strength member including a core formed of a composite material, and an encapsulation layer disposed around the core. A conductor layer is disposed around the strength member. A coating is disposed on the conductor layer. The coating is formulated to have a solar absorptivity of less than 0.5 at a wavelength of less than 2.5 microns, and a radiative emissivity of greater than 0.5 at a wavelength in a range of 2.5 microns to 15 microns, at an operating temperature in a range of 60 degrees Celsius to 250 degrees Celsius. The coating may have an erosion resistance that is at least 5% greater than an erosion resistance of aluminum or aluminum alloys.

A corrosion-resistant terminal material has a substrate made of copper or a copper alloy and a film layered on the substrate. The film has a planned core wire contact part with which a core wire of an electric wire is in contact when the material is formed to a terminal and a planned contact part. The film formed in the planned core wire contact part has a tin layer made of tin or tin alloy and a metallic zinc layer formed on the tin layer; the film formed in the planned contact part has a tin layer made of tin or tin alloy but does not have a metallic zinc layer. A corrosion-resistant terminal uses the corrosion-resistant terminal material described herein.

A corrosion-resistant terminal material has a substrate made of copper or a copper alloy and a film layered on the substrate. The film has a planned core wire contact part with which a core wire of an electric wire is in contact when the material is formed to a terminal and a planned contact part. The film formed in the planned core wire contact part has a tin layer made of tin or tin alloy and a metallic zinc layer formed on the tin layer; the film formed in the planned contact part has a tin layer made of tin or tin alloy but does not have a metallic zinc layer. A corrosion-resistant terminal uses the corrosion-resistant terminal material described herein.

A low smoke, zero halogen self-regulating heating cable includes a semi-conductive heating core and two conductive wires embedded within and separated by the semi-conductive heating core. The cable also includes a primary jacket surrounding the semi-conductive core, a braid surrounding the primary jacket, and a final jacket surrounding the braid. At least one of the primary jacket and the final jacket includes a low smoke, zero halogen material.

A low smoke, zero halogen self-regulating heating cable includes a semi-conductive heating core and two conductive wires embedded within and separated by the semi-conductive heating core. The cable also includes a primary jacket surrounding the semi-conductive core, a braid surrounding the primary jacket, and a final jacket surrounding the braid. At least one of the primary jacket and the final jacket includes a low smoke, zero halogen material.

The present disclosure relates to an armoured cable (10) for transporting alternate current comprising: at least one core (12), each core comprising an electric conductor (121); at least one metallic screen (126) surrounding the at least one core (12); an armour (16), surrounding the at least one metallic screen, comprising an inner layer (16a) of armour wires and an outer layer (16b) of armour wires, at least part of the armour wires of the inner layer (16a) and at least part of the armour wires of outer layer (16b) comprising a ferromagnetic material; and a separating layer between the inner layer (16a) of armour wires and the outer layer (16b) of armour wires. The separating layer has a thickness of at least 1 mm. The present disclosure also relates to a method for reducing losses in said armoured cable and to a method for improving the performances of said armoured cable.

Aspects of this disclosure relate to a sheath closure for a dual-wall mineral insulated thermocouple cable. The new closure and methods are required to maintain the integrity of both the inner and outer sheaths or inner and outer walls of a dual-walled thermocouple design. As the inner and outer sheaths are different materials, they may require closure separately with no mixing of the sheathing materials during welding.

A method of manufacturing hybrid cable applicable in oil wells provides an FIMT, a conductor layer formed by continuous laser welding and cylindrically covered the outer surface of the FIMT, the outer cylindrical surface of the conductor layer being covered with a high temperature resistant insulating layer by a continuous extrusion method or by wrapped helically with insulating tapes around the outer surface of the conductor layer and the external steel tube cylindrically covered the outer surface of the insulating layer. The conductor layer is coaxial with the FIMT, the inner space of the hybrid cable to accommodating excess length of the optical fiber to allow for thermal expansions and tensile stress on the optical cable. The thickness of the insulating layer cylindrically covering the outer surface of the conductor layer is able to be increased, improving the insulating property.

Provided is a surface protection composition excellent in anticorrosion property for preventing metal corrosion as well as excellent in uniform applicability and heat resistance, and a terminal-fitted electric wire treated with the composition. The surface protection composition contains a phosphorus compound (a) represented by the general formula (1) in an amount of 0.1 to 10 mass % in terms of phosphorus element with respect to the total amount of the composition, at least one selected from the group consisting of a phosphorus compound (b1) represented by the general formula (2) and a carboxylic acid compound (b2) represented by the general formula (3) in an amount of 5.0 to 60 mass % with respect to the total amount of the composition, a metal-containing compound (c) in an amount of 0.1 to 10 mass % in terms of metal element with respect to the total amount of the composition, and a lubricant base oil (d).