Process for the production of pipes by the UOE process
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United States of America Patent
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Aug 18, 1998
Grant Date -
N/A
app pub date -
Jun 4, 1996
filing date -
Jun 14, 1995
priority date (Note) -
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status (Latency Note)
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Abstract
A process for the producing of pipes, in particular large pipes, by the UOE process, in which the pipes are sized by cold expansion after internal and external seam welding. In order to render the strength characteristics and deformation characteristics substantially homogeneous in the circumferential direction of the pipe and in order to adjust determined characteristics in a directed manner, the pipes are conditioned by a combined application of cold expansion and cold reduction. The sequence and degree of expansion and reduction, respectively, are established depending on the required profile.
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