Producing automatic ultrasonic flaw detecting system for testing ERW pipes.
According to standards and ERW pipe and profile manufacturers’ needs, online ultrasonic testing for such pipes is necessary and inseparable part of the production.
For testing these pipes with ultrasonic method, we need especial mechanical system, with capability of holding, moving and setting at least 4 probes separately.
The probes are placed besides of the weld, because the waves propagated by them must be in vertical position to be able to detect longitudinal imperfections according to standards.
PEJVAK Rayan automatic ultrasonic testing system, model (Flaw Hunter EP 9501) is used to detect longitudinal flaws of the welds, in ERW pipes and square profiles in online mode.
This system includes 4 separate angle probes and channels that probes are placed in especial holders and use water gap technique and each pair are placed in front of each other.
One pair is used for detecting longitudinal surface defects and other pair for longitudinal root defects in the weld.
This system can be installed just after the welding machine in production line and can use the line’s Couplant for cooling and testing.
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