Arcelormittal Tubular Products Canada Inc.

Copperweld Canada Inc.

U.S. Manufacturing Corporation

Colin Newport

Mamad Jahani

Ovidiu I Savescu

Stephen T McSwiggan

Stephen T Mcswiggan

A method for manufacturing a one-piece axle tube housing with localized sections of increased wall thickness includes providing a tube blank, inserting a mandrel having a reduced diameter profile, passing the tube through an extrusion die to conform the tube to the shape of the mandrel; and extraction of the mandrel from the tube to cause outward deformation of the tube at specific locations. A further reducing step may be used to form the final desired profile, including reduced inner and outer diameters along sections of the axle tube housing.

Tubular articles with varying wall thickness

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 (t, t, t) and forming the blank into the desired structural member. Preferably, the forming step involves hydroforming.

Method of manufacturing structural components from tube blanks of variable wall thickness

Tubular axle housing with varying wall thickness

Tubular articles with varying wall thickness and method of manufacturing same

Trailer hitch bar

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Colin Newport