EngiRef / Pipe Schedule

NPS 12 Schedule 40

NPS 12 Schedule 40 (DN 300): 323.8 mm outside diameter, 10.31 mm wall. Inside diameter 303.18 mm, internal area 72181 mm². Mass 79.73 kg per metre.

Specification

Nominal pipe size (NPS)
12
Nominal diameter (DN)
300
Schedule
40
Outside diameter (mm)
323.8
Wall thickness (mm)
10.31
Inside diameter (mm)
303.18
Mass per metre (kg/m)
79.73
Internal area (mm²)
72181

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