According to encyclopedia data, as of June 5438+February 65438+March, 2022, Jinzhou District Pipeline is a national high-tech enterprise specializing in R&D, manufacturing and sales of welded steel pipes, and it is the largest galvanized steel pipe in China.
Galvanized steel pipes can be divided into cold galvanized steel pipes and hot galvanized steel pipes. Cold galvanized steel pipes have been banned, and the latter can be used temporarily. In 1960s and 1970s, developed countries began to develop new types of pipes and gradually banned galvanized pipes.