Nominal Pipe Size

Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures. Pipe size is specified with two non-dimensional numbers: a nominal pipe size (NPS) for diameter based on inches, and a schedule (Sched. or Sch.) for wall thickness. NPS is often incorrectly called National Pipe Size, due to confusion with national pipe thread (NPT). The European designation equivalent to NPS is DN (diamètre nominal/nominal diameter/Durchmesser nach Norm), in which sizes are measured in millimetres. The term NB (nominal bore) is also frequently used interchangeably with NPS.

Read more about Nominal Pipe Size:  History, Application, See Also

Other articles related to "nominal pipe size, pipe, sizes, pipe sizes":

Nominal Pipe Size - See Also
... British standard pipe thread sizes Copper tubing sizes National pipe thread sizes Pipe (fluid conveyance) Pipe thread sizes ...
Pipe (fluid Conveyance) - Sizes
... Pipe sizes can be confusing because the terminology may relate to historical dimensions ... For example, a half-inch iron pipe does not have any dimension that is a half inch ... Initially, a half inch pipe did have an inner diameter of 0.5 inches (13 mm)—but it also had thick walls ...

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