| 摘要 |
PROBLEM TO BE SOLVED: To provide a tube flaw detector applicable to a tube having a curved axial line. SOLUTION: This tube flaw detector is provided with a flexional head 13, in which a plurality of head components 11 and 12 are arranged in a line adjacently and connected flexibly via a universal joint 20, an ultrasonic probe 14 mounted to the predetermined head component 12 positioned in the line intermediate part of the flexional head 13, a first guide member 21 installed to the respective head components 11 and 12 to be brought into contact with the inside face of a tube to be inspected, and a second guide member 23 arranged between the head components 11 and 12 so that the adjacent head components 11 and 12 are energized by means of the second guide member 23 in the mutually separating directions to slide on the inside face of the tube to be inspected with tight contact.
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