... /USB port 3.Li battery power Advanced Portable Ultrasonic Flaw DetectorIntroduction: The ultrasonic flaw detector is the portable industrial non-destructive ... aerospace, railway transportation and boiler pressure vessels, etc.The ultrasonic flaw detector is an essential instrument for non-destructive inspection ... 100,150,200, 250, 300, 350, 400,450,500,600,700,800,900,1000,2000,3000,4000,5000,6000,7000 ...