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IPC

(21) (22)

Application

96124401/02, 1996-12-27

(22)

Actual filing date

1996-12-27

(45)

Published

1998-10-10

(72)

Inventor

Fedorov A.A.Pljasunov V.A.Zhuchaev V.A.Saf'Janov A.V.Tanchuk A.K.Spiridonov G.I.Struchkov V.V.Emel'Janov S.I.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa Truboprokatnyj Zavod"

METHOD FOR MAKING STRAIGHT-SEAM LARGE-DIAMETER TUBES Russian patent published in 1998 - IPC

Abstract RU 2119836 C1

FIELD: tube production. SUBSTANCE: at making welded tubes by electric arc flux welding by outer seam, welding process is realized in condition of predetermined constant gap between welded edges. Gap is provided by means of rotating washer arranged between tube edges. EFFECT: increased fusion depth, reduced seam height, lowered electric energy and welding material consumption, enhanced operational reliability of tubes. 2 cl, 2 dwg

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RU 2 119 836 C1

Authors

Fedorov A.A.

Pljasunov V.A.

Zhuchaev V.A.

Saf'Janov A.V.

Tanchuk A.K.

Spiridonov G.I.

Struchkov V.V.

Emel'Janov S.I.

Dates

1998-10-10—Published

1996-12-27—Filed