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2 131 933

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C1

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Application

98111927/02, 1998-06-22

(22)

Actual filing date

1998-06-22

(45)

Published

1999-06-20

(72)

Inventor

Brizhan A.I.(Ru)Grekhov A.I.(Ru)Zhukova S.Ju.(Ru)Krivosheeva Antonina AndreevnaMarchenko L.G.(Ru)Orlov V.A.(Ru)Popovtsev Ju.A.(Ru)Tetjueva T.V.(Ru)Usov V.A.(Ru)Shepelev A.V.(Ru)

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Trubnyj Zavod"

METHOD OF MANUFACTURING PIPES FROM CARBON STEEL Russian patent published in 1999 - IPC

Abstract RU 2131933 C1

FIELD: manufacture of high-strength oil application pipes resistant to sulfide corrosion cracking. SUBSTANCE: method includes pipe rolling at 850-930 C, cooling from temperature of rolling end in water for 1-2 s down to temperature of 630-670 C, repeated heating up to 780-830 C with subsequent cooling in water and tempering at 650-720 C. EFFECT: higher strength properties of pipes and their resistance to sulfide corrosion cracking. 2 cl, 1 tbl

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RU 2 131 933 C1

Authors

Brizhan A.I.(Ru)

Grekhov A.I.(Ru)

Zhukova S.Ju.(Ru)

Krivosheeva Antonina Andreevna

Marchenko L.G.(Ru)

Orlov V.A.(Ru)

Popovtsev Ju.A.(Ru)

Tetjueva T.V.(Ru)

Usov V.A.(Ru)

Shepelev A.V.(Ru)

Dates

1999-06-20—Published

1998-06-22—Filed

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