Method and apparatus for expanding spirally welded pipe

Details Method and apparatus for expanding spirally welded pipe Method and apparatus for expanding spirally welded pipe

B - Operations, Transporting

21

D

113/58

B21D 31/04 (2006.01) B21D 39/20 (2006.01) B21D 41/02 (2006.01) B21D 47/00 (2006.01)

Patent

CA 1153932

Abstract Of The Disclosure A method and apparatus for mechanically expanding pipe of the type having a helical weld seam which includes a radially expandable die head assembly for incre- mentally expanding the pipe advanced over the die head and wherein the die head has a helical groove which corresponds to the helical weld seam of the pipe. Means are provided for advancing the pipe longitudinally over the die head assembly for incremental expansion and preferably for substantially simultaneously rotating the pipe to maintain the conformity between the die head groove and the helical weld seam of the pipe. -1-

248112

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