METHOD OF COATING INNER SURFACE OF PIPE LINE Russian patent published in 1999 - IPC

Abstract RU 2141072 C1

FIELD: mechanical engineering. SUBSTANCE: auxiliary hose is preliminarily introduced into pipe line and combination hose impregnated with polymer binder is introduced in it by turning it out. This hose is inflated to obtained contact with pipe line and is hardened afterwards. Force of pressing the hose is created by pressure of gas or liquid. EFFECT: avoidance of loss of polymer binder; enhanced reliability of coat due to avoidance of effect of ground water on binder. 4 cl, 3 dwg

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RU 2 141 072 C1

Authors

Drejtser V.I.

Zagorskij V.A.

Pleshkov L.V.

Dates

1999-11-10—Published

1997-10-21—Filed