PIPE WITH THERMAL INSULATION COATING WITH EXTERNAL WEIGHTING CONCRETE COATING Russian patent published in 2021 - IPC F16L9/14 

FIELD: pipeline technology.

SUBSTANCE: invention relates to pipeline technology, namely to pipes with an external weighting concrete coating intended for the construction, repair and reconstruction of pipelines in sections of underwater crossings, crossings through swamps, flooded areas and offshore pipelines. A pipe with an external weighting concrete coating contains a steel pipe with an anticorrosive coating, a thermal insulation shell including a metal polymer or polymer shell with an anticorrosive coating, an external concrete coating formed by the “spray” method, and a reinforcing element located inside the outer concrete coating.

EFFECT: increasing the service life of the pipe, ensuring uniform ballasting of the pipeline, providing visual and measuring quality control of the applied concrete coating along the entire length of the pipe, as well as high maintainability of the concrete coating, increasing strength and frost resistance and reducing water absorption of the concrete coating.

4 cl, 3 dwg