>You're better off phoning them or going to see them.

Yeah, I'll have to start doing that - trust me, I've emailed loads of 'em (just more convenient that way for me) and I'm not getting anything back...

I think the sizes I'm after (particularly the 6mm wall thickness) aren't helping. Only found 2 companies on-line that list it in their catalogue.

I'll stick at it.

Thanks again.

Wal.