米国規格のフランジの中で、このコードはどういう意味ですか？
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この投稿は最後にbatawfnによって2018-8-10 08:49に編集されました。ANSI RF-SW（B=16MM、E=19MM）。Bは内径ですが、Eとは何でしょうか？意味がわかりません
B 内径 E溶接端部の首部直径
承挿溶接フランジ、B内径 E承挿孔内径
学んだけど、わからない：lol
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