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2 110 588

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Application

97103282/02, 1997-03-12

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Actual filing date

1997-03-12

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Published

1998-05-10

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Inventor

Bodrov Ju.V.Brizhan A.I.Grekhov A.I.Zhukova S.Ju.Zhukov A.I.Marchenko L.G.Popovtsev Ju.A.Shepelev A.V.Tetjueva T.V.Prokhorov N.N.Galichenko E.N.Medvedev A.P.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Trubnyj Zavod"Predprijatie

METHOD OF PIPE MANUFACTURE Russian patent published in 1998 - IPC

Abstract RU 2110588 C1

FIELD: metallurgy; mainly, manufacture of oil-and gas pipes from low-carbon steel resistant to corrosion cracking in media containing hydrogen sulfide and carbon dioxide. SUBSTANCE: method includes preliminarily hot-rolling, cooling, heating, final rolling, heating up to 760-790 C, cooling in water and tempering. Cooling of pipes after preliminary hot-rolling is carried out in the air down to temperature of 600-650 C, and with this temperature, pipes are heated up to 850-900 C for final rolling. Then pipes are cooled in the air, and after hardening, tempering is carried out at temperature of 690-720 C. EFFECT: higher efficiency. 1 tbl

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RU 2 110 588 C1

Authors

Bodrov Ju.V.

Brizhan A.I.

Grekhov A.I.

Zhukova S.Ju.

Zhukov A.I.

Marchenko L.G.

Popovtsev Ju.A.

Shepelev A.V.

Tetjueva T.V.

Prokhorov N.N.

Galichenko E.N.

Medvedev A.P.

Dates

1998-05-10—Published

1997-03-12—Filed

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