To better control the quality inspection of hydraulic power plant crescentrib steel bifurcated pipe composite welds, phased array technology was adopted for sector scanning. The scanning result is very close to dissection. Which proved that ultrasonic phased array inspection is fast, accurate. It also can accurately measure incomplete penetration depth, which is not capable of traditional ultrasonic inspection.

crescentrib steel bifurcated pipe, composite welds inspection, incomplete penetration, phased array technology