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Title:
METHOD AND DEVICE FOR MANUFACTURING LONGITUDINAL SEAM WELDING PIPE FROM METAL
Document Type and Number:
Japanese Patent JPS55128394
Kind Code:
A
Abstract:
An improved process and apparatus for continuous production of welded tubes is disclosed wherein a metal strip material is formed into a tubular form, the longitudinal edges thereof welded, and the welded seam cold worked by the application of a high frequency pulsating force to each area of the seam, while it is supported and widened from within.

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Inventors:
UORUFURAAMU KUREEBURU
FURIIDORITSUHI SHIYATSUTSU
GERUHARUTO TSUIIMEKU
Application Number:
JP16771879A
Publication Date:
October 04, 1980
Filing Date:
December 25, 1979
Export Citation:
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Assignee:
KABEL METALLWERKE GHH
International Classes:
B21C37/08; B21C37/30; B23K9/025; (IPC1-7): B21C37/08; B23K31/06



 
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