GB/T 1048-2005: Translated English of Chinese Standard. (GBT 1048-2005, GB/T1048-2005, GBT1048-2005): Pipework components - Definition and selection of PN
https://www.chinesestandard.net, 2018 M10 19 - 6 pages
This standard specifies the definition and series of PN (nominal pressure). This standard applies to pipework components as specified in the relevant standards which use the PN marking.
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