FIELD: pipeline engineering.
SUBSTANCE: method comprises forming soft three-layer hose by setting the intermediate layer made of a reinforcing material impregnated with a binder between the inner and outer pressure-tight hoses made of synthetic film materials. In the stage of preparing the binder, 0.25-1.0% of organosilicon liquid is added to the binder with a boiling temperature above 200°C. The three-layer hose is set in the pipeline and pressed to the inner side of the pipeline with subsequent solidification of the binder and removing the inner pressure-tight hose. Before removing, the space of the pressure-tight hose is evacuated down to 0.2-0.8 atm.
EFFECT: improved quality of pipeline coating.
1 cl, 3 ex
| Title | Year | Author | Number |
|---|---|---|---|
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|
RU2174640C1 |
| METHOD FOR COATING OF PIPELINE INNER SURFACE | 1993 |
|
RU2037734C1 |
