Method and device for producing long metal tubes
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United States of America Patent
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Feb 22, 2000
Grant Date -
N/A
app pub date -
Nov 5, 1997
filing date -
Nov 16, 1996
priority date (Note) -
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Abstract
During the production of long metal tubes with small diameters, where a metal tape is drawn from an annular coil, is gradually formed into a tube with a longitudinal slot and the longitudinal slot is welded, the internally and externally located metal tape ends of a number of annular coils are interconnected by welding, and the annular coils are horizontally positioned on tension rings which are attached to a rotatable take-up drum. The metal tape with the welded ends is drawn off without interruption.
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