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2019-01-07View Original

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管道更换为国标标准
Reply #22019-01-07
亲爱的朋友们,打扰了,我想请教一个问题。就是说民用高层建筑的管道,压力为2.8MPa。然后负责管道安装施工的单位就说这个管道是按照美标设计的,因为压力为1.8MPa超过了1.5MPa的压力等级,只能选5.5MPa的压力等级。现在换成国标的管道压力等级,壁厚选取去哪里查询?
Reply #32019-01-08
自己计算壁厚,HG/T 20592
Reply #42019-01-09
HG/T20592 PN40的就可以满足要求。
Reply #52019-06-12
介质是什么,温度多少?
Reply #62019-06-16
管道上有无阀门?有阀门的话还得考虑介质的温度,根据法兰的温压曲线,综合考虑后选取压力等级,具体参考HG/T20592~20635中对应的法兰。壁厚可以自己计算。

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