Corrosion Resistance
The main difference between black iron pipes and galvanized pipes has something to do with their corrosion resistance.
Black iron is manufactured using a mild steel compound. It has a low-grade carbon content. The corrosion resistance of mild steel can be further strengthened through the addition of carbon.
On the other hand, galvanized pipes are covered with a protective layer of zinc. The process of adding a layer of zinc is called galvanization, which makes the pipes possess an ideal property of higher corrosion resistance. In addition, galvanization helps prevent the buildup of mineral deposits that can block the pipelines.
Applications
Both types of pipes have distinct properties that are ideal for certain applications. The seamless feature of black iron pipes makes it the best and safe option for transporting natural and propane gas. It is also used for fire sprinkler systems because it is more fire-resistant than galvanized pipe.
Black iron pipes are known to corrode from water easily. This is where the usefulness of galvanized pipes comes into the picture. For over 30 years, galvanized pipes are mainly used for carrying water to supply infrastructures. Due to its ability to resist corrosion, it can also be utilized for countless outdoor and industrial applications. Its applications can include outdoor railings, scaffolding frames, fences, sewage plumbing, road signage, and farm irrigation.