METHOD OF REPAIR OF MAIN STEEL PIPE LINES AND PUSHING DEVICE FOR REALIZATION OF THIS METHOD

摘要

FIELD: civil engineering; major repairs of main water and oil pipe lines. SUBSTANCE: main pipe is cleaned inside and polyethylene pipe is forced through it by means of pushing device. Ratio of diameters of main pipe and polyethylene pipe is equal to 1:0.8. Inter-pipe space is filled with cement gel. EFFECT: enhanced corrosion resistance of main pipe lines. 2 dwg