Method of manufacturing pipes having sections with different wal

Details Method of manufacturing pipes having sections with different wal Method of manufacturing pipes having sections with different wal

1997-02-06

1999-07-20

Hail, III, Joseph J.

Metal deforming

By tool-couple pressing together adjacent surface portions...

To form longitudinally-seamed tube

723671, 72368, B21D 3402, B21D 5128

Patent

active

059243163

ABSTRACT:
A method of manufacturing pipes having sections with different wall thicknesses from an initially plane sheet metal in which a starting sheet metal is subjected to a rolling deformation so as to intentionally produce areas of different wall thicknesses in rolling direction. Subsequently, the rolled sheet metal is cut to size as required. The intermediate product obtained in this manner is then shaped into a pipe and the abutting edges are then joined together.

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