A method for protecting underground pipes by applying three layers of different materials to an outer surface of a pipe is accomplished by wrapping three layers of different materials on the pipe outer surface. The three layers are: The first layer: which surrounds the pipe, is the insulating tape known as cold wrap tape. The second layer: which follows the first layer, made from non-woven synthetic wool, and called the protector. The third layer: the fixing tape made of synthetic fabric that contains fine hooks that can grip tight the second layerthe protectorand prevent it from delamination and falling. Second and third layers act together as Velcro to securely fix and protect the first layer (cold roll tape) from the mechanical damage of soil and tamping over the pipe and UV during the of installation period and before backfilling.

A method for protecting underground pipes by applying three layers of different materials to an outer surface of a pipe is accomplished by wrapping three layers of different materials on the pipe outer surface. The three layers are: The first layer: which surrounds the pipe, is the insulating tape known as cold wrap tape. The second layer: which follows the first layer, made from non-woven synthetic wool, and called the protector. The third layer: the fixing tape made of synthetic fabric that contains fine hooks that can grip tight the second layerthe protectorand prevent it from delamination and falling. Second and third layers act together as Velcro to securely fix and protect the first layer (cold roll tape) from the mechanical damage of soil and tamping over the pipe and UV during the of installation period and before backfilling.

The present invention relates to a process for producing pipelines with heat-storing properties, in which a) organic polyisocyanate is mixed with b) at least one polymeric compound having at least two isocyanate-reactive hydrogen atoms, c) optionally chain extender and/or crosslinker, d) catalyst, e) wax and f) optionally other assistants and/or additives, to give a first reaction mixture, and the first reaction mixture is applied to a pipe and allowed to react fully to give a first polyurethane layer. The present invention further relates to a pipeline with heat-storing properties obtainable by such a process.

The present invention relates to a process for producing pipelines with heat-storing properties, in which a) organic polyisocyanate is mixed with b) at least one polymeric compound having at least two isocyanate-reactive hydrogen atoms, c) optionally chain extender and/or crosslinker, d) catalyst, e) wax and f) optionally other assistants and/or additives, to give a first reaction mixture, and the first reaction mixture is applied to a pipe and allowed to react fully to give a first polyurethane layer. The present invention further relates to a pipeline with heat-storing properties obtainable by such a process.

A metal tubular component adapted to be associated with at least one other metal tubular component to form a joint, said metal tubular component having a longitudinal axis, a body and at least one first axial end adjacent to the body, said first axial end being provided with a connector including a thread and an internal abutment surface, the metal tubular component further including a wall with an internal surface, said internal surface being coated with a layer of a thermally-insulating material, said layer of thermally-insulating material being covered by a liner, said liner having an axial portion extending along the longitudinal axis and a radial portion, said radial portion extending along the internal abutment surface.

A metal tubular component adapted to be associated with at least one other metal tubular component to form a joint, said metal tubular component having a longitudinal axis, a body and at least one first axial end adjacent to the body, said first axial end being provided with a connector including a thread and an internal abutment surface, the metal tubular component further including a wall with an internal surface, said internal surface being coated with a layer of a thermally-insulating material, said layer of thermally-insulating material being covered by a liner, said liner having an axial portion extending along the longitudinal axis and a radial portion, said radial portion extending along the internal abutment surface.

An insulation system insulating a carrier conduit carrying a hot gas or liquid, buried in permafrost, allows expansion and contraction of said carrier conduit, and directionally disperses heat from the conduit minimizing thawing of permafrost. A carrier conduit carries a gas or liquid. A carrier insulation encases the carrier conduit. An outer conduit encases the carrier insulation. The outer conduit top portion includes two symmetrical flanges integrally formed on two sides of said outer conduit. An outer insulation partially encases the outer conduit. There is no outer insulation on the upper part of outer conduit; and thus, outer conduit top portion remains selectively uncovered. Any heat escaping through the carrier insulation, travels in a circumferential direction along the outer conduit and not in a radial direction because of outer insulation. The heat escapes in the soil above the insulated conduit, protecting the permafrost.

An insulation system insulating a carrier conduit carrying a hot gas or liquid, buried in permafrost, allows expansion and contraction of said carrier conduit, and directionally disperses heat from the conduit minimizing thawing of permafrost. A carrier conduit carries a gas or liquid. A carrier insulation encases the carrier conduit. An outer conduit encases the carrier insulation. The outer conduit top portion includes two symmetrical flanges integrally formed on two sides of said outer conduit. An outer insulation partially encases the outer conduit. There is no outer insulation on the upper part of outer conduit; and thus, outer conduit top portion remains selectively uncovered. Any heat escaping through the carrier insulation, travels in a circumferential direction along the outer conduit and not in a radial direction because of outer insulation. The heat escapes in the soil above the insulated conduit, protecting the permafrost.

A reinforced foam block features a body of foam material forming a main body having a volume enclosed by at least one peripheral face. At least one body of reinforcing material, being more pressure resistant than the foam material before incurring permanent shape change and forming a sheet, is embedded in the body of foam material so as to be carried by the body of foam material in prescribed position within the main body. The respective body of reinforcing material provides strength to the main body against force applied to the main body in a direction transversely with respect to the prescribed surface area of the respective body of reinforcing material.

In a method for setting up a pipeline section of a pipe system in a heat network, which is provided for transferring a heat transfer fluid between a heat provider and a heat consumer, the pipeline section is subdivided into segments in a segmentation step. A segment characteristic variable is determined for each segment based on a physical soil characteristic variable. The determined segment characteristic variables of two adjacent segments differ by more than a predefined segment characteristic variable difference value. In a bedding determination step, segment embedding of a pipeline segment, introduced in the trench in this segment, in a water-permeable segment bedding material is predefined for each segment such that a heat loss of the heat transfer fluid transferred in the pipeline segment, which is averaged over the segment and is based on a unit of length, is lower than a predefined heat loss limit value.