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開口溶接タイプのⅠ、Ⅱ、Ⅲは、どの基準によって分類されているのでしょうか??

2016-11-16View Original

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開口溶接タイプのⅠ、Ⅱ、Ⅲは、どの基準によって分類されているのでしょうか??
Reply #22016-11-16
特に決まった基準はなく、各組織が独自の内部基準を設けているはずです……

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