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Commonly used heavy-duty anti-corrosion coatings include zinc-rich primers, epoxy resin coatings, polyurethane resin coatings, acrylic resin coatings, chlorinated rubber coatings, glass flake coatings, epoxy resin powder coatings, fluorocarbon coatings, polysiloxane coatings, polyurea, and so on. Among these, epoxy resin coatings are often used in combination with zinc-rich primers; they are suitable for use in environments with severe corrosion during industrial production, especially for coating the inner surfaces of various storage tanks. Each year, over 40% of the world’s epoxy resins are used in the production of epoxy coatings, with most of them being applied in anti-corrosion applications. Epoxy anti-corrosion coatings are one of the most widely used and important heavy-duty anti-corrosion coatings in the world today. In the structure of heavy-duty anti-corrosion coatings in our country, epoxy coatings also rank first, accounting for 33%–39% ； Polyurethanes come next, accounting for 22%~27% ； Zinc-rich primers account for 11%~17% ； Acrylics and chlorinated rubbers each account for 11%~16% ； Fluorocarbons account for 3.3%–6.6% ； Siloxanes account for 1.1%~2.2% ； Other types (such as polyurea, etc.) account for 1.1%–2.2%. The aforementioned heavy-duty anti-corrosion coatings can be combined to form various systems. For engineering protection, there are three types of coating systems: single-layer, double-layer (bottom and top), and triple-layer (bottom, middle, and top). The protective performance varies significantly depending on the chosen coating system and application method.