No need to paint for hot-dip galvanized steel pipe

Generally, galvanized pipes do not need to be painted, and silver paint is generally used for painting. After the steel pipe is galvanized, the surface is covered with a layer of zinc coating, which separates the steel pipe from the atmosphere, avoids direct contact and corrosion of the steel pipe by the atmosphere, and is protected. The zinc coating on the outer surface of the steel pipe, due to the relatively strong chemical activity of zinc, will form a thin and dense layer of zinc carbonate in the air at room temperature to protect the zinc itself from continuous oxidation. Therefore, the galvanized pipe, whether it is the surface zinc or the steel pipe itself, is protected, will not rust, and does not need to be painted with anti-rust paint. Only when the galvanized layer is damaged (such as steel pipe welding, the coating at the joint is burned), the steel pipe is exposed to the air and loses the protection of the galvanized layer.