In article .com, wrote:

Pipe of the same nominal size is the same OD regardless of schedule,

but not the same regardless of material. E.g. nominal 3/4" steel, copper, PVC,
and CPVC pipe are different sizes.

--
Regards,
Doug Miller (alphageek at milmac dot com)

Nobody ever left footprints in the sands of time by sitting on his butt.
And who wants to leave buttprints in the sands of time?