Helically wound pipes and method

B - Operations – Transporting – 65 – H

Patent

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26/155, 189/70

B65H 81/00 (2006.01) B21C 37/12 (2006.01) F16L 11/16 (2006.01)

Patent

CA 1135487

ABSTRACT OF THE DISCLOSURE Helically wound pipes and a method of making same is disclosed. The pipes are formed from pre-grooved strips which are helically wound and then seamed.

331117

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