B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
153/33
B21D 1/02 (2006.01) B21D 3/02 (2006.01) B21D 5/14 (2006.01) B21D 7/08 (2006.01)
Patent
CA 1174574
ABSTRACT There is disclosed a method and apparatus for rolling flat plate using a cylindrical mandrel and a plate gripper to form a pipe having low pipe diameter to plate thickness ratio by forming a notch or recess in the plate edge to be gripped so that the combined radial dimension of the notched plate edge and gripper is no greater than the plate thickness.
386177
Bereskin & Parr
Hume Kenneth M.
LandOfFree
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