Galvanized steel pipes are categorized intoCold galvanizedSteel pipesHot-Dip GalvanizedSteel pipes, cold galvanized steel pipes have been banned, while the latter is temporarily recommended by the state. In the 1960s and 1970s, developed countries internationally began to develop new types of pipes and gradually banned galvanized pipes. China's Ministry of Construction and other four ministries issued documents clearly stating the ban on the use of galvanized pipes as water supply pipes from 2000 onwards. New residential areas rarely use galvanized pipes for cold water pipes, while some residential areas use galvanized pipes for hot water pipes. Hot galvanized steel pipes inFire ProtectionElectricity andHighwayWidely applicable.