"Flying Pig" wrote in message
...

I have a couple of possibilites for FRP pipe; the reason for using
fiberglass is that the muffler is made of that, and I presume it would be
happier with FRP instead of any other pipe. OTOH, if finding FRP is a
real pain, I guess I'd consider SS - but have no experience in
epoxy/glassing to it, so I'm a bit nervous about it.

It's to repair a muffler which intake inexplicably has virtually
disappeared; I'd abrade and clean the muffler, and the pipe, and lay it up
with light cloth and epoxy after making the right sized hole cleanup in
the muffler can. I think it's a Vetus, but it's round, about a foot high
and wide, with the intake out the side and the exhaust out the top, black
fiberglass...

Vetus make one like that. It has a clamp in the middle, allowing you to
rotate the intake and exit by 360 degrees to suit the installation.
There are two sizes:-
4 litre capacity. height of body 254 cm. part no. NLP 40-45-50
10 litre capacity. height of body 362 cm. part no.NLP 50S-60-75-90