Our company is a source manufacturer of SF double-layer oil tanks. With years of deep cultivation in the tank manufacturing field, we have complete capabilities in production and processing, custom design, fabrication and installation, as well as export services, and hold a full set of export qualifications to meet the procurement and project acceptance needs of customers in different regions around the world. Taking SF double-layer oil tanks as our core product, we integrate the whole chain services including R&D and design, production and processing, on-site installation, and after-sales operation and maintenance. Relying on the cost advantage of independent production, a strict quality control system and a professional engineering team, we provide customers with safe, compliant and highly adaptable SF double-layer oil tank products and integrated solutions. Our products feature double-layer anti-leakage, environmental protection, corrosion resistance and stable durability, and are widely used in various petroleum medium storage scenarios. At the same time, relying on a complete set of export qualifications, we realize the global supply and delivery of SF double-layer oil tanks.

The entire manufacturing process of SF double-layer oil tanks is independently controlled to ensure product quality from the source. In the raw material procurement link, we strictly select steel, anti-corrosion materials and other materials that meet national and international standards, and conduct physical and chemical property tests one by one after entering the factory to prevent unqualified raw materials from being put into production. In the blanking stage, CNC cutting equipment is used to achieve precise cutting of the tank wall, tank bottom and head, ensuring dimensional accuracy and splicing fit. In the welding link, certified welders complete tank welding in accordance with standardized processes. Welding operations are carried out separately for the inner and outer layers of the double-layer structure, and non-destructive testing of welds is conducted simultaneously to ensure welding strength and sealing performance. In the double-layer structure processing stage, the gap between the inner and outer layers is precisely controlled, and the installation of sealing components and the layout of the gap detection system are completed. Subsequently, the tank body is subjected to anti-corrosion coating and accessory assembly. Before leaving the factory, a full set of tests including appearance inspection, hydrostatic test, air tightness test and double-layer gap leakage test are carried out. Only when all indicators meet the standards can the products be delivered. Each step of the manufacturing process complies with standard requirements, guaranteeing the structural safety and service performance of SF double-layer oil tanks.

SF double-layer oil tanks strictly follow dual domestic and international implementation standards, and also adapt to the relevant specifications of the target export markets to ensure full compliance of the products. Internationally, they comply with API 650 “Welded Tanks for Oil Storage” and API 620 “Design and Construction of Large, Welded, Low-Pressure Storage Tanks”, and also meet the tank safety and environmental protection standards of major export regions such as the European Union and Southeast Asia. Domestically, production and installation are organized in strict accordance with GB 50341-2014 “Code for Design of Vertical Cylindrical Steel Welded Oil Tanks” and GB 18564-2019 “Code for Design and Construction of Automobile Gas Stations”. The welding process is qualified in accordance with ASME Section IX standards. From design, manufacturing, installation to testing, all links are aligned with standard requirements, which not only meets the acceptance of domestic projects, but also adapts to the compliance needs of overseas customers, providing a guarantee for the safe use and export customs clearance of SF double-layer oil tanks.

SF double-layer oil tanks are suitable for the storage of various petroleum and petroleum derivative media, and the structure and protection design are optimized according to the characteristics of different media. The storable media include volatile refined oil products such as gasoline, diesel oil and kerosene, sulfur and wax-containing media such as crude oil and heavy oil, as well as petroleum derivatives such as lubricating oil and hydraulic oil. For the volatility and flammability of refined oil products, the double-layer sealing structure and oil and gas recovery adaptive design are adopted to reduce volatilization loss and safety risks. For the slight corrosiveness and viscosity characteristics of crude oil, anti-corrosion coatings and heating and insulation structures can be customized to adapt to the storage working conditions from normal temperature to 80℃. For high-sulfur and highly corrosive media, corrosion-resistant materials and special anti-corrosion processes are selected to avoid tank corrosion and medium pollution, fully adapting to the storage characteristics of different media and giving play to the protective advantages of SF double-layer oil tanks.

In terms of process operation, SF double-layer oil tanks are based on standardized parameters and can be customized and adjusted according to customer working conditions. The conventional design pressure is -0.5kPa~+2.0kPa (gauge pressure), and can be customized to 17.2kPa (2.5psi) for special low-pressure working conditions. The design temperature ranges from -30℃ to 150℃, and low-temperature toughness materials or thermal insulation systems can be customized for extreme temperature environments. The operation mode is mainly static storage, and modes such as continuous feeding-intermittent discharging and circular storage can be customized. It is equipped with process interfaces for feeding, discharging, liquid level monitoring, temperature monitoring, pressure regulation and emergency pressure relief, as well as safety facilities such as breathing valves, emergency relief valves, lightning protection and anti-static devices, liquid level alarm systems and fire-fighting components. The configuration can be adjusted according to the project safety level. All SF double-layer oil tanks must pass the full set of testing and acceptance after fabrication and installation to ensure safe, reliable and stable process operation.

The main materials of SF double-layer oil tanks are accurately selected according to medium characteristics, working conditions, environment and cost requirements, mainly covering three key components: tank wall, tank bottom and head. The tank wall is divided into inner and outer layers. For conventional atmospheric pressure and slightly corrosive medium scenarios, the inner layer is made of Q235B carbon steel, and the outer layer is made of the same material with thickening treatment, balancing strength and cost. For medium and large tanks, low-temperature environments or micro-corrosive working conditions, the inner layer is made of Q345R (formerly 16MnR) carbon steel to improve low-temperature toughness and structural strength, and the outer layer is equipped with anti-corrosion coatings. For high-sulfur and highly corrosive, coastal high-salt fog or high-purity medium storage scenarios, the inner layer is made of 304 stainless steel, which ensures the service life of the tank with excellent corrosion resistance, and the outer layer is made of Q345R carbon steel with anti-corrosion coatings to balance performance and cost. The materials of the tank bottom and head are compatible with the inner layer of the tank wall. Q235B or Q345R carbon steel is selected for conventional working conditions, and upgraded to 304 stainless steel for strong corrosive working conditions, ensuring the compatibility, sealing and corrosion resistance of the overall structure, and adapting to the material needs of different application scenarios.

We provide a full range of processing customization and design customization services for SF double-layer oil tanks, and are equipped with professional integrated solutions for fabrication and installation. In the design customization link, we can customize tank specifications, double-layer gaps, sealing structures, process interfaces and supporting systems according to customers’ site size, storage volume, medium characteristics and working condition parameters. In the processing customization link, flexible adjustments are made to meet personalized production requirements for materials, anti-corrosion processes, accessory configurations and other needs. In the fabrication and installation link, a professional team provides on-site processing, assembly and commissioning services, adapting to the installation conditions of different sites and realizing the seamless connection between processing and installation. We respond to customer needs throughout the process from design to implementation to create more adaptable SF double-layer oil tank products.

Relying on the core advantages of double-layer anti-leakage, safety and environmental protection, SF double-layer oil tanks are widely used in the entire field of petroleum storage. They are mainly used in gas stations as core storage equipment for gasoline and diesel oil, adapting to the compact site and high safety and environmental protection requirements of gas stations; large oil depots and oil and gas transit bases for the transit and reserve of crude oil and refined oil products, and large-capacity tanks can be customized to improve storage efficiency; chemical parks to adapt to the storage needs of petroleum derivatives and chemical solvents, reducing corrosion and leakage risks; port oil storage bases to meet the reception and transit storage of marine petroleum, adapting to port working conditions; at the same time, they are used in large industrial and mining enterprises and logistics parks for the storage of production fuel oil and lubricating oil, fully meeting the safe storage needs of petroleum media in different industries and scales.

Our company has a complete set of export qualifications, holding various certifications, customs declaration and inspection qualifications and international market access documents required for the export of SF double-layer oil tanks, which can smoothly complete export customs clearance and project delivery in various regions around the world. Relying on the advantages of source production, we provide overseas customers with one-stop export services from product design, production and processing, packaging and transportation to on-site installation guidance, strictly control product quality and delivery cycle, and provide multi-language technical support and after-sales operation and maintenance services. With a complete set of export qualifications, reliable product quality and a complete service system, our SF double-layer oil tanks have been exported to many countries and regions, becoming a trusted tank supplier for global customers, and continuously providing safe, environmentally friendly and efficient SF double-layer oil tank products and solutions for the petroleum storage field.