stone wrote:

I have a secondhand, homemade aircompressor that uses a small tank
with a platform welded to the tank for the motor and compressor.

Is it safe to weld to an air tank?

At first I thought this was crazy to do, but then I thought of
the very high pressure welded pipes on gas wells, and so forth.


So, is it safe if welded properly? And second, if it does have a bad weld
on it, will it just pop out the weld and then fiz off, or is it
and explosion hazzard?

It's a homemade small air compressor set at about a 100 psi.


Thanks

If it's welded properly it should be safe. A bad weld
could just leak or if the structure is weakened it could
explode. I've welded 1000's of hydraulic cylinders and
not a one has exploded. They are subject on average to
25000psi. Of course I welded them "properly". We even
built an explosion chamber and tried to blow some of them
up. Never saw a weld fail. Usually the rod end would
flare out causing the lock wire to pop out and the whole
rod/sleeve/piston would shoot out.