Difference between Pressure Pipeline Component Licenses A1 and A2
Thread Content
There is a project that requires special-material valves, and the client insists on having both A1 and A2 certifications. I would like to ask experts: isn’t A1 an upgraded version of A2? How can there be both A1 and A2 at the same time? What’s the difference between them? A1 is high temperature and high pressure, while A2 is low temperature? Thank you all in advance!
This post was last edited by feng elegant on 2017-8-16 at 13:42. If A1 is available, then A2 is not necessary; for more details, please refer to the \"TSG D2001-2006 Rules for Licensing the Manufacture of Pressure Pipeline Components\"
I see, thank you very much for your help. That guy from the property management isn’t professional at all; I need to tell him so that he doesn’t keep causing problems like this in the future. . . . . . .
I see, thank you very much for your help. That guy from the property management isn’t professional at all; I need to tell him so that he doesn’t keep causing problems like this in the future. . . . . . .
There is more later, but cast steel parts cannot overlap each other; P
I suddenly saw this post today, and I wondered if you would be utterly humiliated by the property owner, haha. You’ve been misled by the person above you – valves are valves, and steel pipes are steel pipes; by design, valves cannot overlap each other:lol:lol
Valves also come in A1, A2, and B grades. . It’s inside this pressure pipeline valve. . Within the same variety, A covers B. . A1 covers A2
The permits for valves and pressure pipelines cannot overlap; please do not mislead others. Please check the permit regulations – it’s not meant to argue, but just a discussion
I didn’t quite understand it. . Could you elaborate?