Pipeline issues
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The design pressure calculated for the pipe is 7.8 MPa; PN100 or PN80 are chosen. Can the PN value be defined by oneself? Can PN and CLASS be matched one-to-one? I calculated a wall thickness of 2.3, but the experienced technician said it’s not available; what is the minimum wall thickness for pipelines that is available for purchase?
The last edit to this post was made by —Lantian— on 2011-8-5 at 16:26. 1. How can one determine the nominal diameter when only the design pressure is provided? At the very least, one should know about flow rate and pressure difference – isn’t PN fixed? How to customize? It can be matched accordingly; for media other than natural gas, such as those with a pressure of 7.8 MPA, a CLASS 600 rating, which corresponds to 11 MPA, can be used. 2. There is definitely no version with a wall thickness of 2.3. You can check the hardware manual – it depends on the diameter; I think sizes of 3 and 3.5 should be available
Since you have experienced workers, it is recommended that you communicate more with them. 1. Since we don’t know information such as your temperature and the type of medium, we are unable to determine the appropriate value to use. Additionally, the pressure level is fixed and cannot be customized. 2. The wall thickness of pipes is also specified; it cannot be chosen arbitrarily. For details, please refer to http://bbs.hcbbs.com/viewthread.php?tid=865498&highlight=