This is a request for information and safety concerns around welding salvaged black pipe from a residential renovation. It was being used to pipe natural gas from the city meter through a basement to various fixtures.

I have an old but good AIRCO transformer welder with plenty of amps and was thinking 6010, 6011 rods.

My idea is to cut the gas pipe into 15" lengths and weld them as rungs between 3"x2" angle to form a set of ramps that will get my car up a 16" incline needed to get it inside my shop.

Any thoughts or suggestions would be most appreciated.