I work at a church in Wellington, Fl (Palm Beach County and very sandy soil) and I needed to install (bury) a gas pipe from the building to an outdoor patio area (about 40 feet). I do have someone who installs commercial kitchen equipment everyday and he'll bring the 1" pipe through a cement block wall and make the connection with shut offs, etc. My question is what type of pipe should I use, black pipe, galvanized, or something new? There is not that much natural gas in S. Florida, therefore the hardware stores, etc. usually do not have black pipe and will usually have galvanized. The gas will only be turned on during out door events and that is just a few times a year. It will be off, for safety, most of the time.