BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a pipe fused portion diagnostic apparatus. A pipe fusing part diagnosis apparatus according to the present invention comprises: a probe for projecting ultrasonic waves on at least one of opposing bonding surfaces of a pair of pipes; And an angular adjustment device for adjusting a projection angle of the transducer with respect to the abutment surface, wherein the angle of ultrasonic projection of the transducer is adjusted according to each of the adjustment devices, so that ultrasonic waves of the transducer corresponding to the thickness of the abutment surface So that the ultrasonic image can be acquired, and the fusion weldability of the pipe joint surface can be diagnosed using the acquired ultrasonic image.
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