GE
Sensing & Inspection Technologies
Fundamental Principles
Ultrasonic Testing of Seamless Tubes
Ultrasonic tube testing with rotating probe system
Depending on the application and
specification, seamless tubes have
to be inspected for several types of
flaw over their entire circumference
and length. The specification to be
applied usually describes in detail
the flaw sizes, inspection densities
(pulse intervals), track widths, test and
evaluation methods.
Basically, three different types of
tube inspection are possible. In the
case of rotating probes, the tube
transport movement is linear. In the
case of helically transported tubes, the
probes are arranged stationary. With
stationary rotating tubes, the probes
are guided along the tube.