It looks like a generic BSO dating from the 2000s.
Full suspension bikes basically require disk brakes. V Brakes as your bike has are a sign of a low price bike. That's not necessarily a bad thing. I see plastic brake levers on the bars, which are a positive sign of a cheap bike.
The front fork stanchions do not have boots, which would have dated it earlier than 2000.
The wheel size looks bigger than 26" too - is it 27.5" or 29" ? This could push the effective date back to the early 2010s if so.
Your observation of "heavy duty welds" also supports the low price point of this bike. An expensive bike tends to have nice welds, not big chunky ones. Bigger welds are required because the tube wall is thicker, because it is steel.
So while it could be a good bike to ride once you do some work, it is just a hack bike. I'd expect the suspension to have lost some flex with age too, with a worst case of freezing up completely.
Good work for keeping it out of the waste stream though - a bike in a skip is a sad sight.