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2018-05-24View Original

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. Есть несколько вопросов обратной

Reply #22018-05-24

Reply #32018-05-24

user

Reply #42018-05-25

Translate the following. to Russian.

Reply #52018-05-27

这个止回阀的弹簧有规范要求吗

Reply #62018-05-27

JB T 8937-1999 对夹式止回阀标准刚才看了下，好像只是对材质有一定的要求，其可靠程度需要定期校验确保其密封性！

Reply #72018-05-29

我好奇你是在车间还是部门？宋团光、康崇禄、王玉国、曹振强你认识哪个？

Reply #82018-10-09

wafer check valve can not be used when spring is out of stress .

Reply #92018-10-10

当弹簧失去应力时,不能确保阀瓣复位。毕竟还是中文论坛的中文交流区，建议说大家看得懂的话为宜，谢谢合作！

Reply #102018-10-30

对夹式的弹簧如果像你说的那样，应该不合格，我以前用得都是有一定力度的，不会塌下来的。

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