Meaning of NB, NPS and OD of a Pipe?

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NB, NPS and OD of a Pipe?

What is NB & OD?

NB: 

What is the Nominal bore?
Nominal bore kya Hota hai? explain in Hindi.

-NB means Nominal Bore.
-The internal diameter of a pipe in millimetre (mm) is called as Diameter Nominal or Nominal diameter or Nominal Bore.
-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.
- [T=OD-NB]
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