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Carbon Steel with Anti-corrosion Coating
- A common base material due to low cost and ease of processing.
- Requires professional coatings (e.g., epoxy coal tar pitch, polyurethane) to resist corrosion from moisture and sulfides.
- The coating forms a dense protective film, isolating the steel from gasoline and external corrosive factors.
- Balances economy and practicality for standard operating conditions.
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Stainless Steel
- Offers excellent inherent corrosion resistance via a protective passivation film (chromium/nickel content).
- Performance remains stable against gasoline with high sulfur content; does not contaminate fuel.
- Features high cleanliness, long service life, and low maintenance costs.
- Suitable for strict environments, high-quality fuel storage, or highly corrosive scenarios, though at a higher cost.
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Fiberglass Reinforced Plastic (FRP)
- A composite material (glass fiber & resin) with strong chemical corrosion resistance to petroleum products.
- Does not undergo electrochemical corrosion; lightweight, high-strength, and easy to install.
- Non-conductive and thermally insulating, reducing risks from static electricity and temperature changes.
- Well-suited for humid, high-salt-spray environments. Note: Impact resistance is lower than metal.
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Aluminum Alloy
- Lightweight, strong, with natural oxide film providing basic corrosion resistance.
- More cost-effective and lighter than stainless steel, ideal for small/medium or temporary tanks.
- Can be anodized or coated for enhanced resistance in complex media.
- Avoid contact with strong alkalis and highly corrosive substances.