マンホールのタイプ選定について
Thread Content
さまざまなタイプのマンホールの選定、何に基づいて選ぶのでしょうか？
HG/T20583-2011第8章を参照
基準を見ると、hgt21541-21535
圧力容器は、低中圧なら上の方で推奨されているものを、高圧なら筒体端部構造を推奨します
ちなみに、3階の数字が間違っています
GN150、『容規』、工程要件！
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