At 08:00 PM 1/10/2010, Dennis Haynes wrote:
>Flexible hose (usually corrugated), assemblies yes. And these
>have UL listings for the gas used and for indoor use.

Corrugated metal tube, epoxy coated, rated IIRC for half a psi LP or
natural gas, about 3/4" O.D..  Wouldn't dream of putting it outside
on a vehicle -- I bet I could stick a stout pin through it any
time.  And it warns against vibration and repeated flexing.  Aside
from the two so the range and dryer can be moved for service,
everything is black iron pipe.

Yours,
David