波形膨張継手の表記方法 公称圧力
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GB/T 16749-2018がもうすぐ施行されますが、波形伸縮継手の表記方法において、公称圧力はどのように決定されるのでしょうか？厚さでの、設計温度における設計圧力を取るのですか？常温での設計圧力？1997年版の方が明確だよね
設計圧力を公称圧力なんて呼べるのか？
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