Corrugated tubing with variable depth corrugations and...

Details Corrugated tubing with variable depth corrugations and... Corrugated tubing with variable depth corrugations and...

B - Operations, Transporting

21

D

189/66, 18/941

B21D 15/00 (2006.01) B21D 15/04 (2006.01) B29C 53/14 (2006.01) B29C 53/30 (2006.01) F16L 9/06 (2006.01) F16L 9/18 (2006.01) F28F 1/08 (2006.01)

Patent

CA 1104073

CORRUGATED TUBING WITH VARIABLE DEPTH CORRUGATIONS AND METHOD OF MAKING THE SAME ABSTRACT OF THE DISCLOSURE Helically corrugated tubing with corrugations of variable depth is manufactured in a twisting machine by rotating one end of a deformable tube relative to the opposite end and simultaneously applying axially directed forces to the tube to progressively develop the helical corrugations in the tube wall. The depth of the corrugations is varied by means of a tapered mandrel which is located within the tube while the corrugations are being formed. Tubing sections with variable depth corrugations define flow paths in which the effective cross sectional area varies correspondingly, and such sections are useful in various heat exchangers.

308705

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