On 3/5/2013 10:18 AM, Jim Wilkins wrote:
"Joe wrote in message
...
In article
,
Pilgrim
wrote:

Can any one tell me what the difference between rigid conduit and
iron pipe? ....
....

Is either better for structural uses?
....

Neither is specifically intended although a lot is used for railings,
etc., etc., etc., ...

Have to judge by comparative wall thickness and intended use/loading,
etc. As noted earlier, GRC is slightly lighter than Sch 40 pipe of the
same nominal dimension so will be somewhat less strong based solely on
that difference in resultant bending moments, etc.

Rigid has an appearance benefit of generally a smoother surface but
that's purely aesthetics, not functional.

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