EngiRef / Pipe Schedule

NPS 2-1/2 Schedule 40

NPS 2-1/2 Schedule 40 (DN 65): 73 mm outside diameter, 5.16 mm wall. Inside diameter 62.68 mm, internal area 3085 mm². Mass 8.63 kg per metre.

Specification

Nominal pipe size (NPS)
2-1/2
Nominal diameter (DN)
65
Schedule
40
Outside diameter (mm)
73
Wall thickness (mm)
5.16
Inside diameter (mm)
62.68
Mass per metre (kg/m)
8.63
Internal area (mm²)
3085

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