Parts

First I did some shopping and basic preparation. I got myself:

1. 2000mm length, 76mm diameter steel tube.
2. 5000mm length of gas tube.
3. Regular grill gas.
4. Gas valve pressure adapter.
5. Couple of fittings for connecting gas tube to the pipe.
6. A steel plate for sealing off one end of the steel pipe.
7. A t-connector for splitting the gas tube into two.