Galvanized pipe is a kind of pipe that has been galvanized on the surface of the steel pipe. This treatment is mainly to enhance the corrosion resistance of the steel pipe, thereby extending its service life, and is used in various environments where steel has anti-corrosion requirements.

There are two main types of galvanizing processes for galvanized pipes: hot-dip galvanizing and electro-galvanizing. Hot-dip galvanizing is to immerse the steel pipe in molten zinc liquid to attach a layer of zinc to the surface of the steel pipe. The zinc layer formed by this method is thicker and has better anti-corrosion performance, which is suitable for occasions with high requirements for anti-corrosion performance. Electro-galvanizing is to deposit a layer of zinc on the surface of the steel pipe through an electrochemical method. The zinc layer formed by this method is thinner, but the appearance is smoother, which is suitable for some occasions where the requirements for anti-corrosion performance are not particularly high.