Maybe I wasn't clear. The outlet is a very small metric bolt thread. It is too small for any pipe fitting I have ever seen. I don't know if it will leak since I cannot use the tank with a bolt blocking the outlet.
I see what you mean about the inlet though. The pipe is at significantly different angle. And the spot welded outlet reinforcement looks like this method would leak 50% of the time.
I think welding a fitting over the drilled out bolt in the bottom of the tank will ensure a leak proof fitting.
I will let you know how it goes.
Rich
