圧力配管等級
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圧力配管GC1、GC2、GC3は何を意味していますか？
TSG D0001-2009を見てみれば、これが何を意味するのかわかります。。
GCとは工業用パイプを指し、GC1、2、3はそれぞれの等級を示しており、1級が最も高く、要求も最も厳しい。詳細は20801に記載されている
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