A short quick video on my work installing gas line the existing line was rusty and was not safe along the floor and i need to move the stove to make room fo.
Copper gas line in attic.
Galvanized steel copper brass or csst corrugated stainless steel tubing also can be used in some areas but some utilities specifically prohibit the use of copper.
The most common gas piping is black steel.
You should know what is acceptable in your area.
Copper offers a relatively inexpensive material for service line composition.
I have just purchased a house where the gas line for the dryer is copper.
But it is commonly used these days.
The laundry room is built on a slab.
There were problems w old style galvanized iron pipes for that reason.
In other areas the use of copper is widespread.
You could cut a new length of coiled soft copper flare the ends and connect it with flare fitting.
If the flare fitting on the flexible stainless gas line matches the size of the flare fitting on the existing gas valve you can simply screw it on.
Copper has the ability to be formed in long service line coils.
Are there any rules or safety concerns about running a new gas through the wall into the attic and then dropping it down through the wall.
This flexible copper can easily install around obstacles between the propane tank and the house as opposed to black pipe which requires 90 degree turns for maneuvering around an obstruction.