New Ultrasonic Testing Machine From GE Offers Faster Geometric and Wall Thickness Inspection of Seamless Tube


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/second, 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. With the addition of GE’s USIP|xx electronics platform and the employment of the patented Paint Brush PA technology, all this can now be carried out at higher speeds.

The USIP|xx platform is used to digitize and evaluate the ultrasonic data from sets of phased array probes located circumferentially in the test chamber.  All data within the measurement window is stored and partial sections of this data can be selected and quickly re-evaluated, using subcycling in just one pass of the machine. Wall thickness is displayed in C-scan format

“The ROWA testing machine is already well established as a fast means of testing seamless tube,” says Matthias Schwabe, product manager at GE. ”It provides contactless measurement in a small footprint. It requires minimal maintenance costs because of the absence of moving parts and offers quick change-over between different size tubes. It is an integrated solution with no need for any further process steps, such as laser measurement. With the introduction of the USIP|xx electronics platform and Paint Brush technology, the ROTA-WT is now an efficient, cost-effective and faster solution to seamless tube testing.”

About GE Measurement & Control

GE Measurement & Control is a leading innovator in advanced, sensor-based measurement; non-destructive testing and inspection; flow and process control; turbine, generator, and plant controls; and condition monitoring. Providing healthcare for our customers’ most critical assets, we deliver accuracy, productivity and safety to a wide range of industries, including oil & gas, power generation, aerospace, metals and transportation. Headquartered in Boston, USA, Measurement & Control has more than 40 facilities in 25 countries and is part of GE Oil & Gas. For further information, visit

About GE Oil & Gas

GE Oil & Gas works on the things that matter in the oil and gas industry.In collaboration with our customers, we push the boundaries of technology to bring energy to the world. From extraction to transportation to end use, we address today’s toughest challenges in order to fuel the future.

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