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

1975-09-22

1976-09-21

Lanham, C.W.

Metal deforming

Process

Tube making or reshaping

72393, 269 481, B21D 4102, B21D 3104

Patent

active

039811727

ABSTRACT:
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 incrementally 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.

REFERENCES:
patent: 2780271 (1957-02-01), Ewart et al.
patent: 2873353 (1959-02-01), Rudd
patent: 3056197 (1962-10-01), Lawson
patent: 3073945 (1963-01-01), Osterer et al.
patent: 3289451 (1966-12-01), Koch et al.

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