... channels 3. ultrasonic flaw detect 1. Big Oil and Gas Pipe and tube detection---Ultrasound 2.reach the demands ... zirconium tubes, book-walled pipe, seamless steel tubes, welded gas and oil pipelines, nonferrous metals, ferrous metals and some non ... and remark information etc.Clock TypeInner, outer CLOCKEncoder50-1024 (Optional)Detector modepositive, negative, bi-directional, radio frequency (RF)Peak ...