Four main reasons for corrosion of the bottom plate of oil storage tanks-ONSUN INTELLIGENT

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Four main reasons for corrosion of the bottom plate of oil storage tanks

Dec 18,2025

Corrosion of the tank bottom plate is a common phenomenon in oil storage tanks. What causes this corrosion, and how can it be addressed? The main reasons for tank bottom plate corrosion are as follows:

1. It is related to the material of the tank bottom plate. Inhomogeneous chemical composition of the tank bottom plate, especially an unsuitable composition, will accelerate corrosion.

2. Corrosion caused by welding defects in the tank bottom plate structure. During welding, the anti-corrosion coating can easily burn off, damaging the protective film on the tank bottom and accelerating corrosion.

3. Incomplete rust removal. If rust removal is not thorough during the anti-corrosion treatment of the steel plate, the adhesion between the steel plate and the asphalt primer will be weak, affecting the anti-corrosion insulation layer.

4. Poor sealing around the tank. Poor sealing allows rainwater to easily seep into the tank bottom, and prolonged exposure to a humid environment will also easily lead to corrosion.

Corrosion of the tank bottom plate poses a significant safety hazard and negatively impacts the entire petroleum industry. Therefore, regular corrosion prevention is crucial. Targeted corrosion prevention measures are essential to effectively address the corrosion problem. If you are unsure how to perform corrosion prevention, you can consult the tank manufacturer directly.

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