Flange codes EN 1591 and ASME B16.5, how to compare?? 2

[Tomster88]

Does anyone know how to compare these different codes?
I know the following;
pipe diameter: 12"
temperature: 200 degrees Celsius
pressure: 43.8 bar
and it has to be a weld neck with tapered hub.

I am not very known with calculating flanges so if someone has information about these calcultions I'd really appreciate it.

 

[mgp]

First of all you can't compare apples with oranges.

EN1591 is a standard for calculating (any) flanges whereas ASME B16.5 is a component standard with dimensions and pressure ratings. The european component code for flanges is named EN1092-1 (for PN designated flanges) or EN1092-2 (for class designated flanges - comparable to ASME B16.5)

You should decide whether you want your flange to be an american (ASME) type flange or a european (EN - former DIN) type flange. This depend entirely on the common practice in your industry, or perhaps on the equipment you are trying to connect to if that differ from the common practice.

Then based on what material you need to use you may select a suitable flange from either ASME B16.5 or EN1092 using the pressure-temperature ratings in the applicable standard.

There is no need to perform a flange calculation if you are able to pick a standard flange, unless the flange will fail due to external forces and moments in the connecting piping system. Normally this is discovered by pipe stress analysis.

In your case a standard carbon steel 300# RF flange to ASME B16.5 should do the job.

Hope this helps

Regards
Mogens