Stovepipe
I used 8 in. galvanized stovepipe on my E F M stoker boiler for 46 years.
In all that time I had to put on 2 new elbows.
If you are running a stove and it burns the galvanized pipe 99% of your heat is going out the chimney.
The only way a stovepipe will last more than one year is to have it on a stoker running 24/7 that will keep the moisture out and the pipe will not rust. Art52
Best Place to Buy Stove and Chimney Pipe and ???
316L stainless pipe is the way to go, especially burning coal. I used regular black stove pipe for a coal burner and the stuff was shot after 2 seasons. I bought stainless pipe that is actually used to reline a chimney. It's holding up great. I got mine from http://www.chimneylinerdepot.com. They make it right here in PA. It's got a nice laser welded seam on it too. Very good quality stuff.