Abstract: The present invention pertains to a device for ultrasonic inspection of a weld seam of a longitudinally welded pipe for longitudinal defects with an inspection unit, which is relatively displaceable on a pipe surface on at least one side of the weld seam. The device also has two inspection heads in a tandem and spatially-variable arrangement, such that they can be positioned relative to the pipe surface to correspond to an intended acoustic irradiation angle independent of the diameter of the pipe. According to the invention, one inspection head acts as a transmitter and the other inspection head acts as a receiver. The device also has a pick-up connected to each of the two inspection heads, a coupling means connection connected to each pick-up, and a replaceable connecting element connected each pick-up via the coupling means connection.

Abstract: The present invention pertains to a device for the ultrasonic inspection of the weld seam of longitudinally welded pipes for longitudinal defects with an inspection unit, which can be relatively displaced on the surface of the pipe on at least one side next to the weld seam, comprising a pick-up with a coupling means feed, which said pick-up accommodates at least one inspection head with a modulator, which said inspection head touches the pipe surface and whose channel opens in the area of the modulator, wherein the inspection head can be arranged in a rigidly preset position relative to the pipe surface.