How would I be able to tell if the hopper was welded with nickel?
I can say one thing about the hoppers; The one that came with my boiler is gavinized sheet and looked almost new after clean up, no rust, no holes, some slight surface corrosion at the bottom. I cleaned it, wire wheeled it, cleaned it again and painted it. ready for another 30 years!
The hopper that I just got is rusted out, I will open it up and post some photos. They don't realy look like they are welded, looks like they are folded and crimped?