Tech Steel & Materials What is “Nominal Pipe Size”?

It means “Nominal Pipe Size,” and it is the North American standard for measuring pipe sizes used for various pressures and temperatures.

Schedule 20 steel pipe, stainless steel sch 20 pipe thickness in mm

How To Read the Pipe Chart

Steel Pipe - Kloeckner Metals Corporation

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PVC Piping Sizing Charts for Sch 40 / Sch 80 (O.D., PSI)

Straub Wrap-Around Pipe Coupling,5Pipe STR35901

2 x 1.25 150# Stainless Reducer 304-150 Bell

NPS - 'Nominal Pipe Size' and DN - 'Diametre Nominal', PDF, Pipe (Fluid Conveyance)

Steel Merchant Couplings

Pipe Sizes, NB, DN and NPS - Are they all the same? - U-Bolts-R-Us / Graphskill Ltd Blog