An extremely thin layer of zinc is applied to Galvanized Iron Round Pipe. The steel beneath the zinc coating is kept from rusting by the coating. It is used to make nuts, bolts, screws, and nails resistant to degradation when they are exposed to the weather. The zinc acts as a sacrificial anode, protecting the exposed steel even if the coating is scraped by the leftover zinc. As long as the water is not salt water, Galvanized Iron Round Pipe holds up well to moisture.
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