METHOD OF REPLACEMENT OF PIPE LINE WITHOUT DIGGING-OUT TRENCHES AND DEVICE FOR REALIZATION OF THIS METHOD Russian patent published in 1998 - IPC

Abstract RU 2116547 C1

FIELD: replacement and repair of underground pipe lines. SUBSTANCE: working member is erected in inlet pit, after which it is centered relative to pipe line to be removed and pulled into intake pit. Simultaneously, working member pulls new pipe line. EFFECT: enhanced reliability and accuracy of laying pipe line. 26 cl, 16 dwg

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Authors

Dates

1998-07-27Published

1996-02-23Filed