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2 028 845

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IPC

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Application

5035556/27, 1992-04-01

(22)

Actual filing date

1992-04-01

(45)

Published

1995-02-20

(72)

Inventor

Jakovlev V.V.Vajs A.A.Bondarenko V.P.Smel'Nitskij B.L.Dmitriev A.M.Dubovik V.G.

(73)

Holder

Ural'Skij Nauchno-Issledovatel'Skij Institut Trubnoj Promyshlennosti

PROCESS OF MANUFACTURE OF WELDED COLD-ROLLED PIPES Russian patent published in 1995 - IPC

Abstract RU 2028845 C1

FIELD: plastic metal working. SUBSTANCE: process of manufacture of welded cold-rolled pipes mainly from corrosion resistant steels includes formation of pipe skelp, welding of its edges, calibration and drawing. Novelty of process lies in regulation of deformation value by pipe section within range of 10-20% during formation and calibration. EFFECT: increased productivity thanks to stabilization of drawing process. 2 tbl

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RU 2 028 845 C1

Authors

Jakovlev V.V.

Vajs A.A.

Bondarenko V.P.

Smel'Nitskij B.L.

Dmitriev A.M.

Dubovik V.G.

Dates

1995-02-20—Published

1992-04-01—Filed

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