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1·The relevant tensile test specimens were designed and tested; then the test results were compared and analyzed to obtain the ultimate bearing stress. The study provides the basis for...

首先设计了相应的拉伸试样，进而对试验结果进行了对比分析，得到补焊焊缝的极限承载应力，为补焊管道的安全评价提供了依据。