METHOD OF LINING METALLIC TUBE BY PLASTIC ENVELOPE Russian patent published in 1997 - IPC

Abstract RU 2091231 C1

FIELD: production of pipelines for pipeline transportation systems. SUBSTANCE: method comprises steps of inserting plastic envelope inside metallic tube; fastening said envelope by means of jamming rings; expanding end portions of metallic tube by value no less than doubled thickness of said jamming rings; placing said jamming rings in zones of expanded tube ends when plastic envelope is inside tube; expanding jamming rings together with plastic envelope and metallic tube until their final mutual joining and securing one to another; finally sizing end portions of metallic tube; additionally flaring one of expanded end portions of tube. EFFECT: enhanced efficiency. 2 cl, 2 dwg

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RU 2 091 231 C1

Authors

Takhautdinov Sh.F.

Syrtlanov Ampir Shajbakovich[Ru]

Zagirov Magsum Mudarisovich[Ru]

Kalachev Ivan Fedorovich[Ru]

Vojder Aleksandr Leongardovich[Ru]

Mejdzhor Batler[Us]

Kharbert Dzh.Grin[Us]

Dates

1997-09-27Published

1994-10-14Filed