... ultrasonic testing of titanium tube, zirconium tubes, and book-walled pipe, seamless steel tubes, welded gas and oil pipelines, nonferrous ... , step 0.1dBDetection Sensitivity: greater than 50dBVertical linearity error: no more than 5%Alarm: Each channel can be set up ... can be widely used for titanium tubes, zirconium tubes, and book-walled pipe, seamless steel tubes, welded gas and oil pipelines, ...