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["关于 Füllfläsen 的选用选择问题

2019-02-19View Original

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Reply #22024-05-09
\nGB53116 中 A 类流体管道的补充规定 提到不宜采用平焊(平板式)法兰,这个怎么去理解? 非压力管道也不能用 PL 法兰吗?是不是可以用 SO 带颈平焊法兰? 另外,在化工工艺设计手册和化工管路设计手册上都有一个法兰型式 的选用表,此表显示一般易燃,易爆,中度有毒工艺介质都用 WN 法兰出自什么规范? 使用 WN 法兰的硬性规定除了极度,高度危害和强渗透中度危害以及剧烈循环,高温管道外,还有哪些情况下使用时硬要规定的? 精细化工企业的的管法兰的选用大家参考哪个规范?GB5316&HG/T22683?

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