... ultrasonic testing of titanium tube, zirconium tubes, and book-walled pipe, seamless steel tubes, welded gas and oil pipelines, nonferrous ... . Strong anti-jamming capability, capable of continuous operation for long time.2. One instrument for maximum of 8 channels, ... can be widely used for titanium tubes, zirconium tubes, and book-walled pipe, seamless steel tubes, welded gas and oil pipelines, ...