The effect of girth weld strength match on the limit load and fracture resistance of high-grade, large diameter pipelines was analyzed with failure analysis diagram (FAD) method.

• 摘要采用失效评定图技术分析了油气长输管道特别是高强度大口径管道环焊缝不同强度匹配形式对管道极限承载能力以及抗断性能的影响。