Galvanized steel pipe is divided into cold galvanized steel pipe and hot galvanized steel pipe, the former has been banned, and the latter has been initiated by the state for temporary use.
Complex physical and chemical reactions occur between the hot-dip galvanized steel tube matrix and the melting bath, forming a zinc-iron alloy layer with a close corrosion resistance structure. The alloy layer is integrated with pure zinc layer and steel tube matrix. Therefore, it has strong corrosion resistance.
The zinc layer of cold galvanized steel pipe is an electroplating layer, and the zinc layer is separately stratified from the steel pipe matrix. The zinc layer is thin, and the zinc layer simply adheres to the steel tube matrix, and simply falls off. Therefore, its corrosion resistance is poor. In newly built residential buildings, the use of cold galvanized steel pipes as water supply pipes is prohibited.
Fire engineering: Now the fire water supply pipes are basically galvanized pipes, coated with a layer of paint on the outer layer of galvanized pipes, so that you can see the red fire pipes, in fact, only through galvanized pipe processing.
Steel structure, welding engineering: Now many factory buildings outside are built with welded steel pipes, but welded steel pipes are simple rust, in order to avoid rust and coat a layer of paint, in order to solve this problem, many new steel structure projects are now directly using galvanized pipes, which can save time and can take longer.
Agriculture: It is mainly used to build greenhouses, to build flower shelters, and to make pillars for flowers and melons.