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Pipe OD → NPS / DN Finder

Enter the measurement or designation you have. Calcori maps it to the nearest supported standard reference while keeping material and standard families separate.

Pipes & hydraulics ↗
Language · English (UK)
NPS1 in
DNDN25
Outside diameter33.4 mm · 1.315 in

NPS and DN are nominal designators; OD is the actual measured outside diameter used for this lookup. Reference identification only. Verify the current standard or manufacturer data before purchasing or using the result in a critical application.