FIELD: building, repairing main pipelines for transporting liquids and gases, namely restoration of such pipelines by changing defective portion.
SUBSTANCE: method comprises steps of marking out and trimming ends of repairing "reel" and tube ends for providing coincidence of their edges; marking out tube end portions according to ends of false tube having telescopically changed length. Initially false tube in compressed state is mounted between tube ends and then it is put onto tubes without gap between inner surface of false tube and outer surfaces of tube end portions. Length of repairing "reel" is determined according to length of false tube after mounting the last on end portions of tubes.
EFFECT: enhanced accuracy of marking out tube butts and repairing reel, simplified marking out process, lowered labor consumption of marking out and mounting operations.
1 dwg
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