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总结了采用大角度、高频率、短前沿、小晶片探头对锅炉集箱小径管角焊缝进行超声波探伤以及质量评定的方法，介绍了在华能上海石洞口电厂国内引进的第一台600MW超临界机组直流锅炉集箱质量检验中的应用。
The method of ultrasonic flaw detection and quality evaluation of small-diameter pipe fillet weld in boiler header with high-angle, high-frequency, short-edge and small chip probes is summarized. The first 600MW supercritical introduced in Huaneng Shanghai Shidongkou Power Plant Application of Unit DC Boiler Header Quality Inspection.