FIELD: transport.
SUBSTANCE: invention relates to pipeline transport and can be used in the repair of pipelines with through and part-through imperfections of their steel walls. Such coupling for the repair of pipelines consists of a cylindrical and two toroidal parts, which together form an internal annular cavity around a pipeline. Above toroidal parts are C-shaped. One edge of each toroidal part faces inward of the annular cavity and is connected by an angular seam with the repaired pipeline, and the other edge is connected to the cylindrical part by a butt seam.
EFFECT: proposed group of inventions ensures the elimination of a dangerous stress concentrations in welded joints, which will increase the service life of repaired pipeline sections.
5 cl, 4 dwg
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