| 摘要 |
FIELD: construction of pipeline transport. ^ SUBSTANCE: invention can be used at replacement of underground pipelines in process of repair of reconstruction of underground systems. Simultaneously with destruction of pipeline, centering pipeline is pulled through with subsequent mounting of scraper mechanism. End of centering pipeline is nondetachably connected with adapter bushing in form of truncated cone. After pulling centering pipeline with insert and scraper mechanism in reverse side, new pipeline is pulled into formed space. ^ EFFECT: reduced labor input at replacement of pipelines of big length. ^ 3 dwg
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