Galvanized steel pipes are divided into cold galvanized steel pipes and hot-dip galvanized steel pipes. Cold galvanized steel pipes have been banned, and the latter has been temporarily promoted for use by the country. In the 1960s and 1970s, developed countries internationally began to develop new types of pipes and gradually banned galvanized pipes. The Chinese Ministry of Construction and four other ministries have also announced that galvanized pipes have been banned as water supply pipes since 2000. Galvanized pipes are rarely used in cold water pipes in new residential areas, and some hot water pipes in residential areas use galvanized pipes. Hot dip galvanized steel pipes are widely used in fire protection, electricity, and highways.
