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熱交換器のチューブパック等級の問題

2017-09-23View Original

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GB/T151-2014規格における鋼製熱交換管では、クラスIの管束の外径許容偏差は、GB9948およびGB6479規格における冷間引き抜きまたは冷間圧延の精度よりも高くなっています。皆さんは設計においてどのように対処していますか?
Reply #22017-09-23
設計はGB151、NB/T47019に従って行う
Reply #32017-10-31
一般的には、許容偏差の書類を技術要件と一緒に持っていき、説明します。
Reply #42017-11-01
NB/T47019に従って資材を調達する

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