SF Double Tank

SF Double Tank

Picture for reference only

*Strategic and technical cooperation with South Korean EI company.

*Patent technology of United States STI company  (Patent no. :464039、4655367)

*The industry standard “Steel and glass fiber reinforced plastic Atmospheric  buried horizontal double tank”

*The United States UL certification





The inner pot is made of 8 mm thick steel plate, the intensity is greatly increased

Outer layer is 4 mm thickness of strong glass fiber layer which has strong corrosion resistance and electrical erosion resistance;

There is a 1.2 mm of penetrating clearance between the two layers to guarantee the leak sensor detection of leakage timely, stop the pollution to the outside environment from the source.


The outside FRP layers won’t have electrolytic corrosion phenomena when met with groundwater, saltwater, gasoline, diesel and leaded gasoline; Leak detection systems constantly monitor 24 hours, put an end to the pollution and protect the ecological environment of the soil


More than 30 years safe service life and directly buried way construction, comprehensive cost is more economic than the traditional single pot, construction is more simple and quick.


Dimension parameters

SF double tank specification table

Filling ratio0.
Inner diameter(mm)2600260026002600Special demand may be ordered.
Interlayer thickness(mm)0.1~3.50.1~3.50.1~3.50.1~3.5
Wall thickness of inner tank(mm)≥7≥7≥8≥8Other   diameter should be according to the GB50156 relevant provisions
Thickness of elliptical heads(mm)≥8≥8≥10≥10
Wall thickness of  external tank(mm)≥4.0≥4.0≥4.0≥4.0
Manhole number2222
Manhole nominal diameter(mm)600600600600


Performance parameters

1)   Storage medium: gasoline, diesel, ethanol gasoline, kerosene, biodiesel, lubricating oil, diesel tail gas treatment fluid, etc.;

2)   Design pressure: the atmospheric pressure;

3)   Design temperature: ≤50℃

4)   Buried depth: ≥0.5m

5)   Full volume: 20 m3, 30 m3, 40 m3, 50 m3; Filling ratio, 0.9;

6)   Corrosion allowance: 1mm

7)   Design buried depth: >0.5m, <2.1m;

8)   The inner layer material: Q235-B;

9)   Design life: 40 years;