Ultrasonic Testing (UT) is one of the most versatile method of Non-destructive testing. It’s primary application is the detection and characterization of internal discontinuities. It is also used to detect surface discontinuities, thickness measurement  and assessment of bonding by cladding. The pulse-echo method by ultrasonic longitudinal and transverse wave with A-scan data presentation is the most common industrial use for assessment of welds, plates and pipes and corrosion survey. This system utilizes LCD/TFT screen display in portable digital ultrasonic flaw detectors for examination details by employing probes ranging from 0.5 MHz in conventional applications.