I want to build a custom lumber rack for my pick-up truck,
and the most easily available material for the job that
I can think of is the so-called "black iron" pipe used
for plumbing natural gas lines, etc. (I'd be using ~2"
diameter pipe). I don't know what "black iron" is, but
I suspect that it is not iron at all. Probably some sort
steel. Is this stuff weldable (I'll be using MIG with C-25
17 years ago