Basics of Pipes
What is Pipe:
The pipe is a cylindrical conduit or tube used to transfer fluids (e.g: liquid, gas ) or solids ( e.g: Powder, Pellets ) or semis solids ( e.g: Crude Oil ) under pressure from one point to another point.
Stresses in Pipes:
- Hoop stress or Cylindrical Stress
- Axial Stress
- Radial Stress
Pipes Designator:
- IPS (Iron Pipe Size)
- NPS (Nominal Pipe Size)
- NB (Nominal Bore)
- DN (Diameter Nominal)
IPS:
it is dimensionless size designator of pipe. it represent the Inside diameter of pipe in inches.
e.g: IPS6 means Inside diameter is 6″.
NPS:
it is dimensionless size designator of pipe. it represent the Outside diameter of pipe in inches.
e.g: NPS6 means OD of Pipe is 6.625″ or NPS14 means OD of Pipe is 14″.
NB:
it is dimensionless size designator of pipe. it represent the Outside diameter of pipe in millimeter.
e.g: NB100 or 100NB means OD of Pipe is 114 mm.
DN:
it is dimensionless size designator of pipe. it represent the Outside diameter of pipe in millimeter.
e.g: NB100 or 100NB means OD of Pipe is 114 mm.
it is same as NB.
Small Bore Pipe:
Pipes having Size less than NPS 2 or 40 NB is called Small Bore Pipes.
Big Bore Pipe:
Pipes having Size greater than or equal to NPS 2 or 40 NB is called Big Bore Pipes.
Pipe Wall Thickness:
Pipe wall thickness is represented in terms of Schedule Number or Pipe Weight.
Schedule No. – 5,5S,10,10S,40,40S,80,80S,160,160S
Number with S represent for stainless pipe & Number without S represent Carbon steel or Alloy Steel pipes.
Pipe Weight – STD,XS,XXS
STD means Standards Weight Thickness
XS means Extra Strong Thickness
XXS means Double Extra Strong Thickness.
This all about basics of pipes.
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