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Questions regarding pressure transfer tubes for high-pressure hydrogenation instruments

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Dear experts, for a high-pressure hydrogenation process with an operating pressure of 180 kilograms and a temperature of 420 degrees, should the pressure tapping pipes used for instruments be of 19*5 specification or 18*4 specification? Some say to use 14*4, but aren’t the pressure induction holes too small with that dimension? I hope experts can give some advice. Thank you!
Reply #22016-02-14
We are using DN25 pipes; the pressure and temperature are similar to what you mentioned, or slightly different – which is better?
Reply #32016-02-14
So, what is the wall thickness of a pipe with a diameter of 25?
Reply #42016-02-16
The pressure guide tube uses piping with the same wall thickness. @jiaguoyun

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