COMBINATION OF FIRST AND SECOND ROLLS, METHOD FOR CONFORMING A SIDE WALL OF A PIPE ELEMENT, METHODS OF FORMING A CIRCUMFERENTIAL SHOULDER, BREAKING AND BOILING IN A PIPE ELEMENT

摘要

combination of first and second rollers, method for shaping a sidewall of a pipe member, methods of forming a circumferential shoulder, groove and lip in a pipe member a pipe member has a circumferential shoulder at one end. The shoulder has an outside diameter larger than the outside diameter of the pipe element. A slot is positioned at the side of the shoulder. The groove has a floor surface with an outside diameter smaller than the outside diameter of the pipe member. one lip is positioned adjacent the groove. the lip has an apex with an outside diameter larger than the outside diameter of the pipe element. A combination of roller tools is used to cold-work the pipe elements and give the sidewall a desired shape in a manufacturing method. In another method, a rotation forming tool is rotated in an orbit of increasing diameter within the captured pipe member within an array.