S/F Double Wall Underground Fuel Tank Machine
S/F Double Wall Underground Fuel Tank Machine is specialized equipment designed for the production of double-layer underground fuel storage tanks, widely used in gas stations, fuel storage facilities, and industrial fuel systems. The machine integrates steel tank forming, surface treatment, fiberglass layer application, and quality inspection into one efficient production process.
Product Introduction
S/F Double Wall Underground Fuel Tank Machine is specialized equipment designed for the production of double-layer underground fuel storage tanks, widely used in gas stations, fuel storage facilities, and industrial fuel systems. The machine integrates steel tank forming, surface treatment, fiberglass layer application, and quality inspection into one efficient production process.
With advanced automation and reliable performance, this equipment supports customized tank sizes and specifications, ensuring high production efficiency, stable operation, and consistent product quality. It is an ideal solution for manufacturers seeking durability, safety, and environmental compliance in fuel tank manufacturing.

production Details
The production process of S/F oil tank includes precise steel tank forming, protective surface treatment, corrosion-resistant fiberglass layer application, and strict quality inspection to ensure reliable performance and long service life.
Steel Tank Forming
The steel tank is formed using precise cutting, shaping, and welding techniques to ensure structural strength and stability, capable of withstanding high pressure and harsh environments.

Surface Treatment
A protective coating is applied to the steel tank to prevent rust and corrosion, enhancing durability and preparing it for the fiberglass layer.
Fiberglass Layer Application
High-quality FRP material is applied to the exterior using filament winding or spray-up techniques, providing corrosion resistance and protecting the steel tank from environmental elements, extending its lifespan.

Quality Inspection
Each tank undergoes rigorous inspection to ensure the fiberglass layer consistency and adherence to safety standards, guaranteeing defect-free performance.
This process ensures the production of a durable, reliable S/F Double Wall Underground Fuel Tank that meets top safety and environmental standards.

Finished Product

Company Profile
Hengshui Jiubo Composites Co., Ltd. is a leading manufacturer of chemical equipment and fiberglass composite products. We specialize in turnkey solutions for potassium sulfate, sodium sulfate, sulfuric acid, and calcium chloride production lines, as well as FRP pipes, tanks, cooling towers, molded & pultruded products, and complete FRP production machinery.
Beyond manufacturing, we offer material selection, structural design, technical consultation, material supply, transportation, and installation supervision to support our customers’ needs. Now we have 300 employees, with an annual production capacity of 20,000 tons of fiberglass-reinforced plastic products.
With ISO9001, ISO14001, ISO45001, and SGS certifications, we ensure high-quality standards. Our products are exported worldwide, including the U.S., Canada, Australia, Brazil, Japan, Germany, Russia, India, and Egypt, earning global customer trust.
Our Products & Services:
- EPC Solutions: Complete chemical production lines for potassium sulfate, sulfuric acid, etc.
- FRP Production Lines: FRP pipe & tank winding, pultrusion, and grating production lines.
- Fiberglass Products: FRP pipes, tanks, towers, electrolytic cells, cooling towers, and anti-corrosion solutions.
Through robust manufacturing, technological innovation, and comprehensive support, we deliver quality solutions globally and strive for enduring industry partnerships.










