Yes, it's 3/8" wall gas pipe. For the burnout, I picked up a few firebricks to elevate the pipe a few inches (for airflow), then set the pipe on them vertically and filled it with wood. Cottonwood, mostly, as I have a bunch of it sitting around. Once I got it lit, it burned aggressively--the chimney effect did good things. I quenched it after an hour or so, but it was still hot the next morning. It came out very clean, though it has picked up a goodly amount of surface rust since. When I get ready to finish it, I'll use a sandblaster on it to clean it thoroughly, then paint with something suitable for high temperatures.