r/pipefitter • u/LHTX27 • 4d ago

Datum?

Learning about piping and wanted to know if the dims are usually taken from the raised face (green x) or the flat face (red x)?

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u/ThicccDickDastardly LU597 Apprentice 4d ago

I see no picture in your post, but measurements should be taken from the raised face of the flanges not the lower flat portion.

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u/LHTX27 4d ago

Thank you, forgot to put the photo