The present invention relates to a pipe fusion check apparatus. According to the present invention, the pipe fusion check apparatus comprises: a probe projecting ultrasonic waves to at least one of a pair of facing contact surfaces; and an angle control apparatus controlling a projection angle for the contact surfaces of the probe. The present invention can acquire an ultrasonic image of the probe corresponding to the thickness of the contact surfaces, and check the soundness of the fusion of the pipe contact surfaces using the acquired ultrasonic wave injection angle of the probe adjusted in accordance with each control apparatus.
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