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介绍用专门设计的组合探头和试块对钢网架结构焊缝进行超声波检测的技术和焊缝缺陷的验收质量分级方法。该技术解决了钢管直径4 8159mm杆件焊缝检验的难题 ,也为国内首次制订JG/T 30 34钢网架超声波检测标准奠定了基础
This paper introduces the technology of ultrasonic testing of the weld of steel truss structure and the acceptance classification of weld defects with a specially designed combination probe and test block. This technology solves the problem of weld inspection of steel pipe diameter 4 8159mm rod rod and lays the foundation for the first time to develop the ultrasonic testing standard of JG / T 3034 steel truss frame in China