20号鋼とL245の違いは何ですか
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皆さん、普段私たちが言う20号鋼とL245にはどのような違いがあり、適用条件に大きな差はありますか？価格は？
20号鋼は一般的にDN600以下のシームレスパイプに使用され、L245は一般的にDN600以上の溶接パイプに使用されます。
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