Process for the continuous production of longitudinally seam-welded and corrugated metal tubes
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jun 18, 2002
Grant Date -
Aug 2, 2001
app pub date -
Jan 16, 2001
filing date -
Jan 28, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a process for the continuous production of longitudinally seam-welded and corrugated metal tubes (46), a metal band drawn off from a supply reel is formed into an open-seam tube, welded at its longitudinal edges, and the welded smooth tube (45) corrugated. A withdrawal apparatus driven by an electric motor engages the smooth tube. The smooth tube (45) is corrugated by means of a corrugation plate (43) located in a corrugation head (42) which can be driven rotationally. The corrugation head (42) is driven directly by a hollow shaft motor (37, 38).
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