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3°の水や-15°の水を圧力をかけて使用して開口部を作り、溶接するにはどのような条件が必要ですか?

2017-05-17View Original

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現在使用中の3°水、-15°水の配管で、その上に短節を溶接した後に圧力を保ったまま開孔を行いたいのですが、配管の温度が低いため溶接時に溶接部が割れるのではないかと心配しています(配管はすべてメインパイプです)。割れを防ぐ方法はありますか?

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