FIELD: machine building.
SUBSTANCE: method of repairing metal pipelines by putting pipes inside; protective cases are put on the ends of the pipeline under repair. A case is made as two coaxial cylinders made of elastic sheet with connected bases. An elastic sheet is inserted into the end of a repaired pipeline and pressed against the inner surface of the pipeline. Then, the sheet is folded, pressed against the outer surface of the pipeline under repair and fixed. After installing protective cases on the ends, steel or polyethylene pipes are put through inside the repaired pipeline.
EFFECT: extended performance and reliability of pipeline repair, extended inventory of technical means.
2 dwg
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