There are internal plugs that are used for patio furniture and awnings, if
you can find some. Maybe you could have some made up by a local fabricating
shop. (Weld up the gadgets on a jig, then galvanize.) The plugs I've seen
have been plastic or zinc castings that were a press fit, but nothing says
the inside, slip-fit, tube has to be short or tight. Lots of adhesives out
there for the final assembly.

For bending, you'd need a pattern. Overbend slightly, then straighten to
the desired angle while the metal still remembers being straight.

Roger (I figured you were using the inside of the tubing for something.)

http://home.earthlink.net/~derbyrm

"Courtney Thomas" wrote in message
ink.net...
Roger Derby wrote:
For thin wall, bend. For rigid, use pipe fittings.

Thank you Roger.

I need to avoid bending because I have 7, eight foot long, arches that
need to be made parallel, in place and then, interconnected, which for my
bending skill is a dubious order, but said elbows would eliminate the
bending requirement, but I've had no luck with local suppliers.

Courtney