EngiRef / Pipe Schedule
NPS 1/4 Schedule 40
NPS 1/4 Schedule 40 (DN 8): 13.7 mm outside diameter, 2.24 mm wall. Inside diameter 9.22 mm, internal area 66.8 mm². Mass 0.63 kg per metre.
Specification
- Nominal pipe size (NPS)
- 1/4
- Nominal diameter (DN)
- 8
- Schedule
- 40
- Outside diameter (mm)
- 13.7
- Wall thickness (mm)
- 2.24
- Inside diameter (mm)
- 9.22
- Mass per metre (kg/m)
- 0.63
- Internal area (mm²)
- 66.8
Outside diameters follow ASME B36.10M; inside diameter is OD − 2 × wall thickness.