Forming method using tube blanks of variable wall thickness

Details Forming method using tube blanks of variable wall thickness Forming method using tube blanks of variable wall thickness

B - Operations, Transporting

21

D

B21D 31/00 (2006.01) B21D 26/02 (2006.01) B21D 53/88 (2006.01)

Patent

CA 2342702

A method for forming a tubular structural member includes the steps of cold forming a tube blank to have a longitudinally variable but circumferentially constant wall thickness and forming the blank into the desired structural member. Preferably, the forming step involves hydroforming.

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