Recently, at a PetroChina gas station in Deyang, Sichuan, the installation site was bustling with orderly activity. Multiple 20m³ OKet^® A&Z^® 3DFF^® double-layer storage tanks were being steadily and systematically hoisted and installed.

Fuel Storage Safety: Choosing the Right Equipment Is Key

The OKet^® A&Z^® 3DFF^® double-layer storage tanks feature FRP composite materials for both inner and outer layers, effectively solving the corrosion and rust issues associated with traditional steel tanks that can compromise fuel quality. This design not only safeguards fuel quality but also extends tank service life, with an anti-corrosion warranty of up to 30 years.

At the core of the design is the 360° continuous gap structure made from 3D fiberglass fabric, paired with an all-weather, full-coverage leak detection system. This enables real-time, comprehensive monitoring and early warnings, effectively preventing soil and groundwater contamination, ensuring environmental compliance in one step.

For underground installation beneath driveways, no additional pressure-bearing tank pit is required. Using specialized prefabricated ground anchors and gravel backfill, the tanks are lightweight and easy to hoist, significantly reducing station downtime and lowering overall costs.

To meet diverse operational needs, the OKet^® A&Z^® 3DFF^® double-layer tanks are available in multiple sizes. Whether for compact gas stations with limited space, corporate fuel depots, or high-volume large-scale stations, they can be precisely matched to the specific requirements of any site.

Professional Team + Premium Equipment: Ensuring Both Installation Quality and Safety

As an underground storage solution, 3DFF^® double-layer tanks require meticulous control during on-site construction. OKet^® A&Z^® ensures that its 3DFF^® tanks deliver full value to customers not only through supervision but also through comprehensive management, creating an integrated service system covering pre-sales, on-site, and after-sales support.

With service outlets nationwide, OKet^® A&Z^® provides point-to-point support at every station. From order acceptance and pre-construction coordination, to delivery, installation, backfilling, and final inspection, service engineers are present on-site to provide technical guidance. This ensures that all construction steps are carried out systematically and in compliance with standards, guaranteeing both installation quality and operational safety.

Since 2009, OKet^® A&Z^® 3DFF^® double-layer storage tanks have been widely adopted across nearly 5,000 gas stations nationwide, including those operated by major petroleum companies such as PetroChina and Sinopec, thanks to their core advantages of safety, efficiency, and corrosion resistance. The solution has earned recognition from both the market and industry alike.