CLASS and MPa

2019-06-17View Original

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The nominal pressure PN of flanges includes the following six grades: CLASS150: 2.0MPa, CLASS300: 5.0MPa, CLASS600: 11.0MPa, CLASS900: 15.0MPa, CLASS1500: 26.0MPa, CLASS2500: 42.0MPa

Reply #22019-06-18

There are also PN2.5, 6, 10, 16, 25, 40, 63, 100,….

Reply #32019-06-18

The national standard defines PN as a dimensionless number; PN, which has no units, is merely an alphanumeric code that relates to the mechanical and dimensional properties of the components in a piping system, and is used for reference purposes.

Reply #42019-06-24

There are no units specified in standard HG/T20592, but they are specified in the national standard

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CLASS and MPa

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