Since there are weld defects in welds, using traditional strength theory based on no defect and no crack to design, crane's security in rating load can't be insured.

由于在焊缝部位存在焊接缺陷，采用传统的建立在构件无缺陷、无裂纹基础上的强度理论进行设计计算时，往往不能确保起重机在额定载荷下使用的安全性。

Ultrasonic detection of defects in heat-affected zones of stainless steel pipe welds is discussed. The feasibility of the method is verified by penetrant inspection of dissected pipes.

本文讨论不锈钢管道焊缝热影响区内缺陷的超声波检测方法，应用着色渗透探伤对解剖后的样品进行了验证，证明超声波探伤法的可行性。

Unfortunately, strip blistering defects occurred in the welds in field construction.

现场施工时，出现了条状气孔缺陷。