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2 132 013

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IPC

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Application

97115653/06, 1997-09-18

(22)

Actual filing date

1997-09-18

(45)

Published

1999-06-20

(72)

Inventor

Ratanov K.A.Zagirov M.M.Zaljatov M.M.Vojder A.L.

(73)

Holder

Nauchno-Proizvodstvennyj Otdel Zashchity Neftepromyslovogo Oborudovanija Ot Korrozii I Podderzhanija Plastovogo Davlenija

PIPE WITH INNER PROTECTIVE COATING Russian patent published in 1999 - IPC

Abstract RU 2132013 C1

FIELD: construction and repair of pipelines. SUBSTANCE: protective bushing is interference fitted on each end of pipe with inner protective coating and guard bushing is fitted in protective bushing. Thermal expansion coefficient of guard bushing is less than that of protective bushing. Service part of protective bushing is arranged outside guard bushing. At thermal expansion of pipes electric contact between pipe and protective bushing is preserved. EFFECT: enhanced corrosion protection of pipes. 2 cl, 1 dwg

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RU 2 132 013 C1

Authors

Ratanov K.A.

Zagirov M.M.

Zaljatov M.M.

Vojder A.L.

Dates

1999-06-20—Published

1997-09-18—Filed

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