Spin welding fittings on an IBC or rain barrel

Sometimes I need a bulkhead fitting on a barrel or IBC and don't have easy access, or arms long enough. When I was putting in a potable water tank on  a bus I learned about spin welding fittings on plastic tanks.  You have a plastic fitting that you spin against the tank and it melts/welds itself to the tank for a leak proof seal. The fittings cost are often less than a bulkhead fitting.
They come in all sizes male and female. The tools to spin the fittings are incredibly expensive, but it isn't something that a handy person can't make. https://www.youtube.com/watch?v=fMdLWAYr7Ck

Interesting! I hadn't heard of those before.

I have never used a fitting larger than 3/4 npt and use an air angle head die grinder to spin them up. A larger fitting might be easier with router.