Zinc anodes are typically used for protecting of steel construction from corrosion in seawater or saline mud which includes heat exchangers, ballast tanks and submarine pipelines. ELEMENTS INDUSTRIAL’S cast zinc anodes are produced in a variety of weights and are designed for use in low resistivity soil environments. Zinc anodes have a driving voltage which is lower than magnesium; therefore, they are most effective on well-coated steel structures that demand less current output.