This paper introduces the ultrasonic inspection technics in the butt welded-joints of T91 small diameter tubes, and discusses its technical feasibility.
介绍t 91钢小径管焊接接头的超声波探伤工艺，并就工艺的可行性进行探讨。
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The status of the radiographic technology for the butt-welded joints in small diameter tubes are re-viewed briefly. The key points are discussed for the development of radiographic technology.