Which type of corrosion is specifically linked to galvanized pipes?

Galvanic corrosion occurs when two dissimilar metals are in electrical contact in the presence of an electrolyte, resulting in the corrosion of one of the metals. In the case of galvanized pipes, these pipes are typically coated with a layer of zinc to prevent corrosion of the underlying steel. However, if the zinc layer becomes damaged or if the galvanized pipe is connected to other metals, galvanic corrosion can occur. The zinc serves as the anode, which sacrifices itself to protect the steel, but in the process, it can lead to corrosion issues if not monitored or managed properly.

Understanding this phenomenon is crucial, especially in water distribution systems, where different materials may be used in conjunction, and protective coatings like galvanization play a key role in maintaining pipe integrity and longevity. The presence of electrolytes in the water distribution system can facilitate this type of corrosion, making it particularly relevant to the context of galvanized pipes.