Buying exhaust tube ??

[Bonzo]

Over the last few months I have been giving some serious thought into buying a decent mandrel tube bender for fabricating exhaust parts.

As some of you know, decent tube benders don't come cheap but feel one would be a usefull investment for my humble workshop

One aspect that is nagging away in the back of my mind is, where the devil can I find a source of coated mild steel & stainless exhaust tube !!??
Guessing that full lengths would be the most cost effective way to buy tube.

Tried a few internet searches but all I keep turning up are those infernal directory search engines

Living so far out into the sticks puts me at a real dissadvantage when it comes to buying materials

If anyone knows of any exhaust tube supliers I would be pleased to hear about them