GE’s Ultrasonic Testing Machine Offers Faster Geometric and Wall Thickness Inspection of Seamless Tube
Melissa Larson | May 5, 2015
The new ROWA-WT ultrasonic test machine for seamless tube and pipe from GE Measurement & Control now combines high end signal processing with patented phased array (PA) ultrasonic technology. This allows all dimensional and wall thickness measurements to be carried out in compliance with API and EN specifications up to speeds greater than 2 metres/sec., dependent on the tube diameter. The compact testing solution is seamlessly integrated into the production line and will boost the productivity of tube mills producing pipe for the oil and gas sector.
The ROWA-WT features phased array (PA) ultrasonic transducers, which are electronically controlled to provide full coverage of the tube circumference and are coupled to the surface by means of a rotating water jacket. There is no need to rotate the tube or move the transducers during testing. The machine is purpose-designed for carrying out dimensional and wall thickness measurement of seamless pipe: It measures inside and outside diameter and wall thickness, as well as checking for ovality, eccentricity inner wall deformation and laminations. It can also detect flaws to a level of 6.3, 6.0 and 3.2 mm flat bottom hole (FBH) depending on the specification.
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