Defines the pipe outside diameter.
Typical units (depending on your unit system):
-
in
-
mm
-
cm
Used in the average cross-sectional radius calculation:
-
r2 = (OD - WT) / 2
-
OD = Outside Diameter as entered
-
WT = Wall Thickness of attached pipe
The B31.3 code defines r2 as the "mean radius of matching pipe".