Generally, galvanized pipes do not need to paint, and silver powder paint is usually brushed. After galvanizing the steel pipe, the surface covers a layer of zinc coating, which makes the steel pipe and the atmosphere separate, avoiding the direct contact and rust of the steel pipe to the steel pipe, which is protected. Due to the strong chemical activity of zinc on the surface of the steel pipe, the zinc will form a thin and dense layer of zinc carbonate in the air at room temperature to protect the zinc itself that will not continue to be oxidized.
Therefore, the galvanized pipe, both the surface of the surface or the steel pipe itself is protected, will not rust, and there is no need to use anti -rust paint. Only when the galvanized layer is destroyed, (such as the steel pipe welding, the coating of the joints is burned), the steel pipe is exposed to the air, and the galvanized layer is lost.
