Tianjin Jinhai Special Coatings & Decoration Co., Ltd.
Tianjin Jinhai Special Coatings & Decoration Co., Ltd.
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Storage Tank Paint

Types of Storage Tank Paint

Anticorrosive paint system

  • Anticorrosive paint system for outer wall of storage tank

    The corrosion of the outer wall of the storage tank is mainly atmospheric electrochemical corrosion in the chemical atmosphere. At present, the most commonly used heavy-duty anticorrosive paint system is an epoxy zinc-rich primer or inorganic zinc silicate primer/epoxy mica iron oxide intermediate paint / acrylic polyurethane topcoat. According to the different corrosive environment of the storage tank, the dry film thickness is 200-300μm. The dry film thickness of epoxy zinc-rich primer is usually not less than 50μm. If the inorganic zinc silicate primer is used as the anti-rust primer, a sealant paint must be applied to it. Polysiloxane paint has outstanding weather resistance and can be applied in high-thickness films. Using polysiloxane paint as topcoat, only two coats of paint are required for construction, saving the construction man-hours and material costs of the intermediate coat.

  • Anticorrosive paint system for inner wall of storage tank

    The corrosive environment within the storage tank is mainly the medium stored in the storage tank. The oil itself, whether it is crude oil, semi-finished oil or refined oil, is not corrosive, but the corrosive impurities such as inorganic salts, acids, sulfides, oxygen, and water in the oil will corrode the inner wall of the tank. The paint for the inner wall of the oil tank is first required to have good corrosion resistance, good solvent resistance, and not pollute the medium in the storage tank. In order to store oil safely, it is also necessary to use anti-static paint. The service life of the coating system on the inner wall of the storage tank is closely related to the steel condition of the inner wall of the storage tank and the selected coating material. According to the coating thickness, the coating types of the inner wall of the storage tank can be divided into three categories: thin coating, heavy anti-corrosion coating, and glass flake/fiber-reinforced lining.

    • Thin coating coatings mainly include pure epoxy coatings and phenolic epoxy. The dry film thickness of each coating is controlled at 100-150μm, and the total film thickness is 300μm.

    • Heavy-duty anti-corrosion coating layer mainly refers to low-solvent and solvent-free epoxy coatings, including solvent-free glass flake coatings, with a design dry film thickness of 500-1000μm.

    • Glass flake paint or glass fiber reinforced lining, with a dry film thickness of 1000-1500μm, mainly including epoxy glass flake paint, vinyl ester glass flake paint, polyester glass flake paint, and solvent-free epoxy glass fiber reinforced lining and etc.


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