Very sad but stupid on steroids. If I had been there I would have run like hell and told everyone else to do the same. Iron tubing for water is not cannon grade steel.
**it happens.
I once put a large bottle rocket of of which the stick had broken, fuse-downward into a PVC pipe.
It was loud when the PVC pipe disintegrated.
There was never any stick. It wasn’t a bottle rocket.
Live and learn — sometimes.
Yup, it has a welded seam in it. I think you can get seamless but it’s not common or cheap. They probably used schedule 40 too as it’s most common.