1. Carbon Steel & Alloy Steel Materials
- Carbon steel (Q235 series) is the most commonly used structural material for gasoline storage tanks.
- Chosen for high strength, low cost, and excellent weldability.
- For highly corrosive environments, stainless steel or nickel‑copper alloys can be selected.
- Special metallic materials further enhance corrosion resistance and service life.
2. Fiberglass Reinforced Plastic Materials
- FRP (fiberglass) is widely used for outer protective layers or all‑non‑metallic double‑walled tanks.
- Superior corrosion resistance, electrical insulation, and lightweight properties.
- Inner FRP layer contacting gasoline must contain anti‑static materials.
- Surface resistivity must meet anti‑static requirements to prevent static accumulation hazards.
3. Steel & FRP Composite Structures
- SF double‑walled oil tanks are the mainstream structure for underground fuel storage at gas stations.
- Inner layer: carbon steel plates provide structural strength.
- Outer layer: fiberglass provides corrosion protection.
- Continuous interstitial space with leak detection system between layers.
- Combines pressure‑bearing capacity of steel with corrosion resistance of FRP, significantly extending service life.
4. Aluminum Alloys & Other Special Materials
- Aluminum alloys are frequently used in gasoline transport tankers and certain marine storage tanks.
- Advantages: low density, good thermal conductivity, and strong corrosion resistance.
- Copper alloys and copper‑silicon alloys are applied in specific marine gasoline storage tank specifications.
- Must meet corresponding thickness and strength requirements for safe operation.