结合超声检测串列式扫查的原理和特点，开发出一套适用于海洋钢结构厚板K型或单V型坡口焊缝的串列式扫查装置。使用此装置进行了验证试验，结果表明：该装置降低了检测的人力工时投入，提高了检验准确率，达到了稳定、快速检测垂直于扫查面的面状缺陷（如坡口未熔合、中心裂纹等）的目的。

Based on the principle and characteristics of ultrasonic tandem scanning, this paper develops a series of tandem scanning devices which are suitable for type K or single-bevel-groove welds of offshore steel structure. The experiment is carried out by using this device, and the results indicate that the device reduces the labor hour investment for this seam examination, improves the inspection accuracy, achieves a stable and rapid detection of surface defects perpendicular to the scan surface (such as incomplete fusion, cracks and other defects of the center).