EngiRef / Pipe Schedule
NPS 3/4 Schedule 40
NPS 3/4 Schedule 40 (DN 20): 26.7 mm outside diameter, 2.87 mm wall. Inside diameter 20.96 mm, internal area 345 mm². Mass 1.69 kg per metre.
Specification
- Nominal pipe size (NPS)
- 3/4
- Nominal diameter (DN)
- 20
- Schedule
- 40
- Outside diameter (mm)
- 26.7
- Wall thickness (mm)
- 2.87
- Inside diameter (mm)
- 20.96
- Mass per metre (kg/m)
- 1.69
- Internal area (mm²)
- 345
Outside diameters follow ASME B36.10M; inside diameter is OD − 2 × wall thickness.