In HG20615, for the large-diameter flanges of Series A and Series B, which one is generally chosen?
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In HG20615, there is a significant difference between Series A and Series B of large-diameter flanges; their prices also vary greatly, and they are not interchangeable. Which series is generally preferred in the chemical industry? The B series is more cost-effective, but it is much thinner than the A series.
Generally speaking, in the chemical industry, the A series is more commonly chosen for large-diameter flanges. Although the B series is cheaper, its relatively low thickness results in a shorter service life and lower stability; therefore, for some important applications, it is necessary to use the more robust A series flanges. Of course, in some unconventional or low-pressure applications, the B series can also be used as a substitute. .
This would require calculating the strength of the materials to be used based on the temperature and pressure of the medium, and then determining which series meets the requirements while also being cost-effective.
Yes, it needs to be selected based on the medium pressure; generally, petrochemical projects use models from series A. I guess for tasks like water treatment that take place at normal temperature and pressure, it’s the B series