EngiRef / Pipe Schedule

NPS 1-1/4 Schedule 40

NPS 1-1/4 Schedule 40 (DN 32): 42.2 mm outside diameter, 3.56 mm wall. Inside diameter 35.08 mm, internal area 966 mm². Mass 3.39 kg per metre.

Specification

Nominal pipe size (NPS)
1-1/4
Nominal diameter (DN)
32
Schedule
40
Outside diameter (mm)
42.2
Wall thickness (mm)
3.56
Inside diameter (mm)
35.08
Mass per metre (kg/m)
3.39
Internal area (mm²)
966

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