Which type of pipe relies on sacrificial anodes for corrosion protection?

Steel pipes are particularly susceptible to corrosion due to their composition and the presence of moisture in the environment. To combat this, sacrificial anodes are employed as a method of corrosion protection. Sacrificial anodes are made from a metal that is more reactive than steel, typically zinc or magnesium. When attached to a steel pipe, the anode corroded preferentially, thereby protecting the steel pipe from rust and degradation.

This method is essential for extending the lifespan of steel pipes used in water treatment and distribution systems, especially in environments where soil and water conditions promote corrosion. Other types of pipes, such as PVC, reinforced concrete, and bar-wrapped concrete, do not rely on sacrificial anodes for protection against corrosion, as they either do not corrode or use different materials that are inherently resistant to corrosion.