Differences between standards HG20615-2009 and HG20592-2009
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This post was last edited by jintchinssen on 2010-10-30 at 22:11. The flange standards should comply with the two standards HG20615-2009 and HG20592-2009. What are the differences between these two standards? Thank you
This post was last edited by jintchinssen on 2011-1-11 at 15:06. The former belongs to the Class series (American system), while the latter belongs to the PN series (European system). Both have their own complete systems regarding the designation and range of nominal pressures, as well as flange and bolt/nut combinations; they cannot be used together.
The maximum allowable operating pressure for these materials varies; for example, the 16Mn forgings specified in HG/T20592-09 generally correspond to the corresponding pressure rating, while those specified in HG/T20615-09 require a lower pressure level. When selecting flanges, pay attention to determining the design pressure!
20592 corresponds to the European system, while 20615 corresponds to the American system; the American system can correspond to SH3406 as well
It’s the difference between American standards and European standards; to put it more plainly, it’s the difference between metric and imperial systems.
This post was last edited by jintchinssen on 2011-1-11 at 15:15. #5 explains it very clearly.
The former is the Class series (American system), while the latter is the PN series (European system); both represent complete systems in terms of nominal pressure values and ranges, as well as flange and bolt/nut combinations
The former is the Class series (American system), while the latter is the PN series (European system). Both represent a complete system in terms of nominal pressure values and ranges, as well as flange and bolt/nut combinations; they cannot be used together
I kept asking the same question, and finally understood it today. Thank you to everyone who replied above:victory: