B - Operations – Transporting – 65 – H
Patent
B - Operations, Transporting
65
H
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
Mcfadden Fincham
Westaflexwerk L. & F. Westerbarkey
LandOfFree
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