Abstract: In a device for the arrangement of at least one ultrasonic testing head on a tube having a welding seam for the ultrasonic testing of the welding seam of the tube each ultrasonic testing head is built in a support. The support is provided with front and rear support points and led in constant radial distance to the tube on a test trace. The ultrasonic testing head is arranged in the area of the front support points, which are closest to the welding seam to be examined seen in the peripheral direction of the tube. A mechanical scanning device is provided, it is connected to the ultrasonic testing head and is arranged at the support in the area between the front and rear support points. The ultrasonic testing head has a single ultrasonic vibrator.

Abstract: An apparatus for X-ray testing of pipes following ultrasonic testing includes a reversible roller track for telescoping a pipe upon a cantilever arm which can be moved up and down on a stand and carrying an endless belt with resilient U-shaped holders for supporting film strips to be moved into the pipe and adjacent to suspected defects. Reversal of the belt drive permits removal of the exposed film strips as the pipe is moved out.

Abstract: Ultrasonic test equipment for testing the welding seam a thick wall includes transducers arranged in tandem and along the welding seam, whereby a tandem pair inspects in any instance two surface-near zones (inner and outer surface) as well as an interior zone. One of the transducers of the pair participates in a function test. Two pairs cover the same zones, but from opposite sides.

Abstract: The test head includes its own calibration device in form of a wire or a bore in front of the transducing surface so that a distinguishable calibration echo is always available.

Abstract: A transport belt is constructed from a toothed belt as base with individual carrier elements separated by spacers. These elements each have a shallow trough with central indent and tapered base.

Abstract: A tubular sleeve with reflector body, water ingress and venting openings is used to produce specific echoes of a test signal launched by an inserted transducer. Amplitude and transit times of the element serve as a transferable standard.

Abstract: A plurality of water tanks hold a plurality of ultrasonic transducers, each providing a different angle of incidence for ultrasonic radiation for a tube or pipe passing through the tank. Water of a specific temperature is fed to the particular tank being used and in conjunction with a particularly oriented transducer, a particular test angle of refraction is established. Through a particular range of different transducer orientations in conjunction with a temperature range from about 5.degree. to 40.degree. C., a rather wide range of possible refraction angles can be established.

Abstract: An ultrasonic transducer is held in a tubular holder which in turn is axially placed in a mount. A frame depends from a cover of a gimbal mounted container for coupler fluid and the mount is clamped to the frame at an adjustable angle so that the transducer axis always intersects the same point. Ball rollers on the cover position the container in relation to a pipe to be tested so that said point is located on the pipe's surface. The transducer holder has a shoulder onto which one may seat a calibration standard.

Abstract: The entrance angle of an ultrasonic beam into a test object results from refraction at the interface thereof with water. The physical orientation of the transducer directing a beam towards the object is maintained, but the refraction angle is varied through controlled adjustment of the water temperature.