GB20801.2意見募集案における低温材料の問題
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GB20801.2の表A-1にある低温用シームレスパイプには、ASTM A333-Gr.8材が新たに追加されましたが、低温用鍛造品にはこれに対応する米国規格の鍛造品がありません。では、そのパイプのフランジ鍛造品の材料はどのように選定すればよいのでしょうか？
GB/T 13401-2017の付録を見る
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