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Any one who noted the flanges rating difference between PN64 and PN63? As we known, for the flange norms of DIN, BS4504 and UNI, flanges rating is PN64 for the nominal pressure, but from EN1092-1 norm, the nominal pressure revised to PN63. EN1092-1 norm was published later than DIN, UNI and BS4504, so I think…
There were a lot of flanges standards in the world, DIN, EN1092-1, BS4504, ANSI, AWWA, UNI, JIS, SANS, GOST, NFE, ISO, AS, NS etc, even every country have their owned norms for pipe flanges, but in fact, the flanges norms can be separated to American norms and European Norms, the American norms have ANSI, API,…
As you known, AWWA C207 is American Water Works Association standard for flanges, they have Class D, E, F etc, different is flange’s thickness using for different pressure. But in BS 10 standard, also have Table D, E, F Classes for flanges, so I guess, maybe they have some relations about the 2 norms of flanges.…
