Chris
One reason to bond the pipe is in case it gets hit by lightning and brings the energy into the house. Here the gas pipes in the ground are plastic but some places are metal. The gas meters usually have a dielectric fitting to isolate the interior piping from the exterior. We always want the bonding connection on the house side of the meter and the gas company wants it there too. the dielectric fitting is to control galvanic corrosion on the underground gas pipes.
