Production method and production facility of metal pipe
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United States of America Patent
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Apr 10, 2018
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N/A
app pub date -
Feb 22, 2013
filing date -
Mar 9, 2012
priority date (Note) -
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Abstract
A method of producing a metal pipe which can suppress quenching defects is provided. In the method, a bend of the metal pipe is straightened by a straightening machine 10. Next, both pipe end portions of the metal pipe whose bend has been straightened are cut off by a pipe cutting apparatus 20. Next, a plurality of the metal pipes whose both pipe end portions have been cut off are aligned in the axial direction thereof to be conveyed to a quenching apparatus 30, and the metal pipes are quenched by being cooled after being heated by induction heating.
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