As the application of electric resistance welded (ERW) pipes in deep-water increases, accurate structural performance assessment satisfying the limit state, which is collapse performance, is necessary. Advantages of ERW pipes are effective productivity coming from continuous manufacturing process, but it is hard to track change in mechanical properties during manufacturing. In this study, the ERW pipe manufacturing process was simulated as a three-dimensional finite element method, and the collapse analysis was performed by reflecting the results of the ERW pipe manufacturing process. The results showed that adjustment of ERW pipe manufacturing process had a significant effect on enhancement of collapse performance.

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