The Phased-array Ultrasonic Testing for Small-bore Steel Tubes of Boiler in Power Plant

This article introduces the application background, test principles and technical characteristics of phased-array ultrasonic testing. Meanwhile, it summarizes the major methods and technical process of this kind of testing for small-bore steel tubes (25 mm≤φ≤89 mm), presenting some practical cases of defect-inspection. This article can also be used as a reference of successful application and promotion of phased-array ultrasonic testing for power plant project.