"Harold & Susan Vordos" wrote in message That has nothing
to do with what distinguishes tubing from pipe. Tubing
comes seamless, drawn over a mandrel, drawn over a mandrel- special smooth
ID, cold drawn butt welded and electric resistance welded. Some of these
descriptions match pipe perfectly.

It's the size of the material that determines what it is, not the method
by
which it is manufactured. Both tubing and pipe are available in steel,
stainless steel and aluminum, too.

Harold

So Harold,

A piece of tubing with the same dimensions, made by the same method, made
from the same material is functionaly the same as a piece of pipe made the
same way? How does one get identified as "pipe" and the other as "tubing".
Is it purely how the two are measured and how their dimensions are
represented? Why would these be labeled differently? Is one commonly
available in one form that the other is not?

Puzzled,

Peter

Peter