Abstract: A method for draw forming a desired contour to the outer diameter of a tubular work piece provides that the selected work piece have a wall thickness uniform throughout its length. The outer diameter of selected work piece is reduced along essentially only a part of the starting metal blank by drawing the metal blank only partly through a die or only partly through each one of a succession of dies. The resulting drawn reduced diameter will have essentially the same wall thickness as the starting blank. If a thinner wall thickness is desired on the reduced outside diameter, an internal mandrel can be inserted in the starting tube, which will work with the draw die to decrease the resulting wall thickness of the drawn tube to an amount less than the starting tube. The workpiece recovered after the drawing method is useful for producing an automotive fuel tank filler tube or an automotive instrument panel support beam.

Abstract: A method for draw forming a desired contour to the outer diameter of a tubular workpiece provides that the selected workpiece have a wall thickness uniform throughout its length or a combination of uniform thicknesses at end portions with a mid portion of a tapering wall thickness. The outer diameter of selected workpiece is reduced along essentially only a part of the starting tubular metal blank by drawing the metal blank only partly through a contoured die or only partly through each one of a succession of contoured dies.

Abstract: Method for severing the ends of tubing by feeding the end of a tube through a die such that its end to be sheared extends beyond the die while presenting a shear blade with a pointed end in the interior of the tube end. After the shear blade is inserted into the tube, relative vertical movement between the shear blade and the tube is effected to cause the pointed end to initially puncture the tube wall adjacent the die. The shearing blade is thereafter shifted laterally and vertically to shear remaining portions of the tube wall.

Abstract: A method for producing tubing of variable wall thickness, and particularly for producing double-butted tubing, wherein the wall thickness or gage at the ends of the tube is greater than that in the intermediate portion of the tube. This is accomplished by threading the tube over a mandrel, usually having a removable plug at one end thereof, until a portion of the plug passes through a necked-down end of the tube, pushing the tube and the mandrel through a die, and thereafter pulling the removable plug and the tube from the mandrel while causing the outer periphery of the tube to pass through a die.