FIELD: construction engineering; construction and repair of various pipelines; manufacture of pipes under stationary conditions. SUBSTANCE: cold hardening adhesive incorporating anticorrosive pigments is applied to pre-treated internal surface of pipeline. Adhesive is introduced between plug-type pistons displacing through pipeline. Displacement of pistons is ensured by turning out polymeric hose doubled by tissue on both sides; to this end pressure drop of compressed gas such as air is built up upstream of pistons. Hose is ballooned by internal pressure, compressed to inner surface of pipeline for adhering to the latter; after that inner surface of polymeric hose is coated with vanish. EFFECT: improved reliability of pipeline. 2 cl, 4 dwg
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Authors
Dates
2001-08-27—Published
2000-12-20—Filed