Any gas district now or hereafter organized in this state under the provisions of this article is hereby authorized and empowered to promulgate rules and regulations governing and relating to the installation, connection, maintenance, and servicing of gas fixtures, pipes, appliances, and equipment with respect to properties served by it.
Such rules and regulations may require that any person so installing, connecting, maintaining, or servicing any such fixtures, pipes, appliances, and equipment be licensed by the gas district promulgating such rules and regulations.