When steel pipes are exposed to the air and undergo oxidation reactions with oxygen or are eroded by oxygen elements in water to form oxides, they will rust. Galvanized steel pipes have undergone galvanization treatment on the steel pipes, forming a galvanized layer that isolates the air, thus being more corrosion-resistant and less prone to rust. So, will galvanized pipes rust?
Generally speaking, galvanized steel pipes are just not prone to rust, but it doesn't mean they won't rust at all. It's just a matter of time. After long-term use, galvanized pipes will still rust. In addition, if the environment where it is used is relatively humid or it is exposed to rain for a long time, etc., galvanized steel pipes will quickly show oxidation and spots, and then rust will occur.
In addition, there are two types of galvanized steel pipes: hot-dip galvanized pipes and cold galvanized pipes. Relatively speaking, hot-dip galvanized pipes are less prone to rust than cold galvanized pipes.

