Method of continuously manufacturing a compound pipe...

Details Method of continuously manufacturing a compound pipe... Method of continuously manufacturing a compound pipe...

B - Operations, Transporting

29

C

B29C 51/10 (2006.01) B29C 51/14 (2006.01)

Patent

CA 2658408

During the manufacture of a compound pipe, which is composed of an internal tube and a corrugated external tube, a slight overpressure relative to atmospheric pressure pa is applied to the inside of the internal tube, which is guided across a calibrating mandrel during the manufacture. At the transition to the formation of a pipe socket, a partial vacuum p3 relative to atmospheric pressure pa is temporarily applied the internal tube.

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