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Double oil tank refers to SS storage tank, FS storage tank, FF storage tank three.

SF full name for the steel reinforced glass fiber double tank, is a single layer of steel tank attached to a layer of glass fiber reinforced plastic (ie FRP) impermeable jacket, which constitutes a double structure tank. There is a gap between the steel inner tank and the FRP outer tank.

FF full name for the glass fiber reinforced plastic double tank, both inside and outside the glass fiber reinforced plastic are made of the middle with a gap between the space;

At the same time equipped with leakage detection device, the gap space for 24 hours full monitoring. Once the inner tank or outer tank leaks, the sensor of the leak detection device can detect the level of the bottom of the gap space when the alarm, to ensure the safe use of the tank.