阀门的初始阀座气密性可以通过水利测试进行检验，这种测试对以后长期的气密性影响很小。
The initial seat tightness of valves which can be proven by hydro-testing has little effect on extended long-term tightness.
新安装或大修后的氢气系统必须做耐压试验、清洗和气密性试验，符合有关的检验要求，才能投入使用。
After a new installation or maintenance for hydrogen system, pressure test, flushing and gastight test must be done.
新安装或大修后的氢气系统必须做耐压试验、清洗和气密性试验，符合有关的检验要求，才能投入使用。
After a new installation or maintenance for hydrogen system, pressure test, flushing and gastight test must be done.
应用推荐