Device for ultrasonic weld seam testing of longitudinally welded pipes for longitudinal and transversal errors

A device for ultrasonic weld seam testing of a longitudinally welded pipe, in particular a large pipe, for longitudinal and transverse flaws, comprising:

• a swingably suspended first test carriage, movable on a surface of a pipe on one side next to a weld seam, for longitudinal flaw inspection;
• and
• a swingably suspended second test carriage, disposed in alignment with a center of the weld seam and movable on the surface of the pipe, for transverse flaw inspection,
• wherein each of the first and second test carriages includes a mount for accommodating at least one test head, which has an oscillator, and at least, one coupling medium connection having a channel which ends in an area of the oscillator and has an outlet zone configured in the form of a nozzle which is secured to the mount,
• wherein the test head for longitudinal flaw inspection is constructed for arrangement in different, fixed and predefined angle positions at a variable distance to the nozzle in the mount, and
• wherein the mount for the test head for transverse flaw inspection is arranged at a variable distance to the surface of the pipe in a support element.