EngiRef / Pipe Schedule

NPS 3/4 Schedule 80

NPS 3/4 Schedule 80 (DN 20): 26.7 mm outside diameter, 3.91 mm wall. Inside diameter 18.88 mm, internal area 280 mm². Mass 2.2 kg per metre.

Specification

Nominal pipe size (NPS)
3/4
Nominal diameter (DN)
20
Schedule
80
Outside diameter (mm)
26.7
Wall thickness (mm)
3.91
Inside diameter (mm)
18.88
Mass per metre (kg/m)
2.2
Internal area (mm²)
280

Outside diameters follow ASME B36.10M; inside diameter is OD − 2 × wall thickness.