高手们来解释一下密性试验阿：hydrostatic testing, air testing, hose testing?

daiyujin

Where air testing is adopted, all
boundary welds, erection joints and penetrations, including pipe connections, are to be examined with
a suitable leak indicator solution prior to the application of special coatings.

leak indicator 是什么啊，

这个要在特涂之前作？


Air pressure drop testing, i.e., checking for leaks by monitoring
drop in pressure is not an acceptable substitute for required hydrostatic or air testing.


这个 air pressure drop testing又是什么啊

yyt990153

肥皂水
汽密压降，
管路压降一般要求15分钟不超过5%

龙马

全英文啊，先翻译了再说啊。

sanjing527

js435259874

air tight test

小学生

肥皂水
管路压降一般要求15分钟不超过5%

YYU2008

leak indicator means press gauge
air pressure drop testing means up to testing pressure , keep this pressure untill 15-30 minutes, leak indicator no  pressure reduce indication