Meaning of NB, NPS and OD of a Pipe?

NB, NPS and OD of a Pipe?

What is NB & OD?

NB: 

-NB means Nominal Bore.
-The internal diameter of a pipe in millimetre (mm) is called as Diameter Nominal or Nominal diameter.
-NB is European designation of pipe equivalent to NPS.
nps-nb-od-pipe

NPS- NPS means Nominal Pipe Size
- It is North American equivalent to NB.
- NPS is frequently used in place of NB.
- It is expressed in inches.

OD:

-OD means Outside Diameter of a pipe.
- It is expressed in millimetre (mm).
od-nb-pipe

T:

- It is the Thickness of pipe.
- It is the difference between OD and NB.

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