Apparatus for continuously producing steel pipes including using rotable beds of tools for different size pipe
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United States of America Patent
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-
Dec 1, 1987
Issued Date -
N/A
app pub date -
Jan 13, 1987
filing date -
Mar 15, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for continuously producing electric-welded steel pipes by continuously supplying coiled strips as connected to one another by welding, progressively forming the strip into a tubular shape and high-frequency welding the opposed edges of the strip to form a seam. To produce required small quantities of steel pipes having varying diameters and wall thicknesses, a group of roll assemblies is replaceable by another group within a short period of time. Groups of forming, welding or sizing rolls are mountable on a polygonal bed which is lockable in position after rotation. For replacement, the bed is rotated by a hydraulic motor to bring the desired group of rolls to the proper position quickly.
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Cited Art Landscape
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