CONE TUBE PRODUCTION METHOD Russian patent published in 1998 - IPC

Abstract RU 2110346 C1

FIELD: plastic metal working, namely production of cone tubes for masts of illuminators, high-voltage power transmission lines and other elongated different-purpose tubes. SUBSTANCE: cone tube is made of two blanks cut out of steel sheet and welded one to another. Further shaping is realized by means of fluid in open space without any die set. EFFECT: enhanced efficiency. 7 dwg

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RU 2 110 346 C1

Authors

Grinshpun M.I.

Moiseev V.I.

Gorpinchenko V.M.

Gol'Denberg L.I.

Dates

1998-05-10—Published

1992-11-17—Filed