I have some thick-wall 316L SS hemispherical tanks that I'd like to sell, and thought they'd make perfect barrels for rocket mass heaters. I think you could cut them in half and build TWO stoves, but it's not my area of expertise.
Those are some pretty high end pressure tanks. Seem's a shame to cut them up.
What diameter is it ? It looks to be less than a 55 gallon barrel?
They are nice looking, but a thick skin is not the best in that location.