Founded in 1986, Gas Piping Inc. is in the business of gas line installation and propane delivery services. Based in Phoenix, Ariz., it offers a range of services, such as natural gas line installation, propane tank and propane gas line installation and propane delivery. The company installs natural gas line to various appliances, such as pool and spa heaters, barbeques, fire pits and fireplaces. Gas Piping Inc. also offers residential propane delivery in different locations.