Welding in a bung on a steel fuel tank.
That looks GREAT. For guys that can't tig if you have oxy-acet you could silver braze it, or if mapp gas or even a GOOD LPG torch, get that Harris "stay silv" silver braze kit which is a small roll of small gauge med temp silver braze / solder. comes with that and acid flux
Harris Safety-Silv 56 Brazing Kit 56KPOP
Higher temp braze:
Lower temp silver solder:
That looks GREAT. For guys that can't tig if you have oxy-acet you could silver braze it, or if mapp gas or even a GOOD LPG torch, get that Harris "stay silv" silver braze kit which is a small roll of small gauge med temp silver braze / solder. comes with that and acid flux
Harris Safety-Silv 56 Brazing Kit 56KPOP
Higher temp braze:
Lower temp silver solder: