EngiRef / Pipe Schedule

NPS 1/2 Schedule 40

NPS 1/2 Schedule 40 (DN 15): 21.3 mm outside diameter, 2.77 mm wall. Inside diameter 15.76 mm, internal area 195 mm². Mass 1.27 kg per metre.

Specification

Nominal pipe size (NPS)
1/2
Nominal diameter (DN)
15
Schedule
40
Outside diameter (mm)
21.3
Wall thickness (mm)
2.77
Inside diameter (mm)
15.76
Mass per metre (kg/m)
1.27
Internal area (mm²)
195

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