Sometimes you just have to make it yourself.
I'm in need of a VERY stout hinge for a build I'll just call "Project Alpha" for now, and I cannot find what I want, so I'm building it.
This hinge has to be stout, and it has to be a very specific size.
Here are all the pieces, I'll have to weld it tomorrow, but it should be strong enough for the job.
The two outside pieces of the hinge barrel will be welded to one plate, and the middle piece of the hinge barrel to the opposite plate, then the pin in the middle will be welded in place so it cannot be removed. The gold colored bits are washers that I drilled out to fit the hinge pin that I made from some hard 6mm drill rod I had laying around.
Sometimes you just have to build it yourself.
The pessimist complains about the wind; the optimist expects it to change; the realist adjusts the sails.
William Arthur Ward