TPT July 2014

Technology News

Ultrasonic testing bench PROVEA, a specialist in designing and manufacturing machines for tube producers, has developed and manufactured a new ultrasonic testing bench. This turnkey system involved Provea for the mechanical part and Metalscan-Tecnatom for the ultrasonic probes. with OD from 35 to 270mm, length of 3 to 12m, and wall thickness of 2.5 to 42mm, in stainless steel (though many other materials are usable).

constant, accurately set and regular focal distance during the process. As this kind of tube might not be perfectly straight, immersion tanks go up and down in order to be at the required distance from the tube’s surface. Other technical features that entered into the project scope include minimal untested length, marking system, water complete closed looped management, parallel firing phased array UT, specific supervisor for acoustic results, inspection data reporting (defect mapping), PLC management designed on demand, automatic sorting after tests (and automatic re-controlling for doubtful tubes), and multiple control modes (L/T/WT/LAM/smooth defect combinations). Provea – France Fax: +33 380 961 615 Email: contact@provea-machine-tube.com Website: www.provea-machine-tube.com

Overall, inspection treats internal and external notches (longitudinal, transversal, oblique 30° and 45°, 0.5mm width, 3 per cent of the wall thickness depth, length down to 6.3mm); flat bottom holes (5mm diameter, 50 per cent of the wall thickness depth); smooth defect (5 per cent of the wall thickness depth, 5mm length, 5mm width); and wall thickness reduction (12.5 per cent of the nominal wall thickness, axial or circumferential, length 12.7mm, width 6.3mm). The signal to noise ratio (SNR) is greater than 4:1 (or 12dB). One of the most important technical developments is the partial immersion tanks designed for the project. They will enable the PA probes to come in contact with the tube without any water getting inside the tube (no plugging necessary). The mechanical design ensures a

The new bench has been designed in order to comply with high quality standards. The main feature of the system is its roto-translation capacity: the tubes have a helical movement thanks to motorised pinch rolls, in order to control the entire tube surface with only a short uncontrolled area on the tubes’ ends. The new equipment allows several types of defect detection: axial and skewed cracks, transversal cracks, delamination and smooth defect. An ultrasonic thickness measurement system is also configured. Four phased array probes are integrated into two very specific ultrasonic tanks. The target was to control a tube range

Established in 1994, Shanghai Yueyuechao Steel Pipe Group has now been developed into a comprehensive enterprise which is specialized in carbon steel, low-alloy seamless and welded tubes and pipes manufacturing and exporting. Our production range: Seamless tubes: 1/8"~28" in OD, 1.5~50mm in WT. LSAW pipes: 14"~56" in OD, 8~50mm in WT. 3-rolling bending plate welded pipes: 40"~158" in OD, 15.9~140mm in WT.

Gas cylinder pipe: 62~711mm in OD, 2.3~18mm in WT. Our main certs: API/ISO/BV/DNV/ABS/LR/TUV/GL/

TEL: +86-21-31108050 FAX: +86-21-31108052 E-MAIL: red@yyc88.cn

WEBSITE: http://www.yyc88.com HEAD OFFICE ADD: 10–11th Floor, No.11 Building, No.1588, Youyi Rd., Baoshan District, Shanghai, China

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J uly 2014