Abstract: The invention relates to a process for producing a press-fitted pipe connection comprising a press fitting with a stop and a smooth-ended pipe section pressable therewith, in which, after the pipe section is cut, its cut end is trimmed inside and outside and, if necessary, the protective cover of the pipe is removed, the processed pipe end is inserted into the press fitting to the stop and the press fitting is then pressed, by means of a pressing tool with individual pressing jaws that encompass the press fitting, after application of the pressing tool in a force-locking and positive-locking fashion, with the inserted pipe section to form a non-detachable tight pipe connection, whereby toward the end of the pressing the individual pressing jaws complete each other to form a closed pressing chamber. During pressing, in the contact area of at least one pressing jaw with the outer surface of the press fitting, a characteristic stamping is formed, the appearance of which depends on the quality of the pressing.

Abstract: A press fitting for producing a nondetachable tight connection of smooth-ended pipes which has at least one portion receiving a toroidal sealing element and an adjoining cylindrical area extending in the longitudinal direction, and is provided with a shoulder acting as a stop for the pipe which can be pushed in or pushed on. The sealing element has, in the circumferential direction, at least one portion which is provided with a cross section diverging from the starting cross section in that a bulge extends along the circumference and along the cross-sectional plane and a recess facing the pushed in pipe extends radially in the cross section of the sealing element, the volume of the bulge compared with the starting cross section is at least equal to the volume of the recess lacking at the starting cross section and, before pressing, the recess of the sealing element forms a through-opening in the axial direction viewed in cross section.

Abstract: A pipe joint, includes a press fitting with a section that is beaded in cross-section and holds a sealing ring and with a cylindrical area attached thereto that has, at the end of its extension, a flange-like depression forming a stop. The pipe joint also includes a pipe, whose smooth end, after being inserted into the press fitting, comes to rest on the inner stop of the press fitting. A non-detachable, tight pipe joint is formed by means of a pressing tool having at least two pressing jaws encompassing the press fitting after the pressing jaws are closed. During pressing, the pressing jaws act both on the annular bead, including the sealing ring placed therein, and on the cylindrical area of the press fitting.