Shijiazhuang Zhengzhong Technology Co., Ltd (Center Enamel) is recognized worldwide as a premier Carbon Steel Above Ground Oil Storage Tank Manufacturer. Above-ground storage tanks (ASTs) are the essential, visible infrastructure that underpins the global energy, petrochemical, and industrial fluid supply chains. These large-scale vessels are used for the secure containment of virtually every type of petroleum product, from crude oil and refined fuels to industrial lubricants and process oils. The safe operation of these tanks is non-negotiable, demanding the highest level of engineering precision and adherence to international codes. The storage vessels used, the Carbon Steel Above Ground Oil Storage Tank, must be meticulously engineered for uncompromising structural integrity, advanced systems for fluid purity and thermal management, rigorous defense against corrosion and environmental threats, and unwavering adherence to the most stringent international safety and environmental codes including API, UL, and NFPA standards.
Our expertise is concentrated on fabricating customized Carbon Steel Above Ground Oil Storage Tank solutions that set the industry benchmark for durability, compliance, and operational performance across refineries, pipeline terminals, power generation facilities, and distribution hubs. We focus on delivering solutions that integrate superior structural strength, specialized features for volatility and contamination control, advanced corrosion protection systems, and strict adherence to major international construction codes, such as API 650. Through meticulous engineering, rigorous quality control, mastery of automated welding techniques, and depth of material science knowledge, our Welded Steel Tanks are essential assets of maximum reliability, safety, and long term service life, securing the critical bulk liquid storage segment globally.
The design and construction of any Carbon Steel Above Ground Oil Storage Tank must simultaneously address structural stability, fluid properties, and stringent regulatory requirements. As a specialized Carbon Steel Above Ground Oil Storage Tank Manufacturer, Center Enamel focuses on an integrated engineering approach:
Structural Integrity and Code Compliance: ASTs must withstand significant hydrostatic loads, wind loads, and seismic forces over a multi-decade design life. Compliance with API standards, notably API 650 for atmospheric tanks and API 620 for low-pressure vessels, is the foundational requirement. Our manufacturing processes ensure every Welded Steel Tank adheres to these codes for shell, floor, and roof integrity.
Corrosion and Contamination Control: Crude oil, refined products, and industrial oils all present unique corrosion risks, often stemming from water, sulfur, or chemical residues. The tank structure requires comprehensive multi-layered protection, including external coatings, internal linings, and effective water removal systems to mitigate internal corrosive attack.
Volatility and Emission Management: For volatile products like gasoline or certain chemicals, the tank design must incorporate specialized features to minimize vapor space and product loss. This involves the integration of floating roof systems and fixed roof structures, as dictated by environmental regulations (e.g., VOC emission controls).
Environmental Protection and Secondary Containment: Due to the risk of environmental harm, all Carbon Steel Above Ground Oil Storage Tank installations are subject to regulations mandating secondary containment (often a dike or double-wall construction) and detailed leak monitoring plans to prevent soil and groundwater contamination.
Thermal and Viscosity Control: Storage of heavy fuel oils or viscous process oils requires the integration of specialized thermal management systems, such as internal heating coils and insulation provisions, to maintain fluid flowability during transfer operations.
Our expertise ensures that every Welded Steel Tank is engineered not just for containment, but for the specific demands of the stored fluid and its operating environment.
The manufacturing process utilized by Center Enamel for the Carbon Steel Above Ground Oil Storage Tank is a highly controlled, technology-driven operation focused on achieving the highest standards of structural quality and long-term asset performance.
Adherence to the American Petroleum Institute (API) Standard 650 is the core of our manufacturing mandate for atmospheric ASTs.
Materials and Shell Fabrication: We utilize certified, high-grade carbon steel plates, which are meticulously processed through high-precision cutting and rolling to form the cylindrical shell courses. The plates are carefully prepared (beveled) to guarantee the perfect fit-up required for high-integrity welding.
Automated Welding and NDT Verification: Advanced automated welding systems are employed for all vertical and horizontal shell seams. This technology ensures the high quality, continuous, full-penetration welds mandated by API 650. Every critical weld on the Welded Steel Tanks undergoes rigorous Non Destructive Testing NDT—such as radiographic examination, ultrasonic testing, and pressure testing—to confirm monolithic structural integrity and complete leak tightness before the tank leaves the fabrication facility.
Design for External Loads: Our engineers perform meticulous calculations for wind, seismic, and nozzle loads, ensuring all anchors, shell stiffeners, and roof supports are engineered to exceed code requirements for the specific site location.
The longevity and reliability of the Carbon Steel Above Ground Oil Storage Tank hinge on effective defense against internal and external corrosion.
Sloped Bottom Design and Water Management: The tank floor is fabricated with a precise sloped bottom leading to a dedicated low point sump or water draw off point. This crucial feature ensures that any free water (which accelerates corrosion) or heavy sediment (which contaminates the product) is efficiently channeled for removal, protecting both the carbon steel floor and the integrity of the stored oil.
Internal and External Coating Systems: The tank’s exterior receives multi-layered, industrial-grade coating systems selected for superior resistance to atmospheric corrosion, UV degradation, and chemical splash. For sensitive or corrosive products, the interior can receive specialized, non-reactive internal linings or coatings tailored to resist the specific chemical attack, isolating the stored oil from the carbon steel.
Cathodic Protection Provisions: Where necessary, the tank structure is designed to accommodate the integration of cathodic protection systems for the tank floor’s soil-side surface, significantly extending the asset’s service life in corrosive soils.
The roof system is vital for environmental protection, volatility control, and operational safety.
Floating Roof Integration: For high-volatility refined products (e.g., gasoline), the Carbon Steel Above Ground Oil Storage Tank is fabricated to seamlessly integrate an Internal Floating Roof IFR or External Floating Roof EFR. This mechanism minimizes the vapor space, dramatically reducing product loss and ensuring compliance with stringent VOC emission standards.
Aluminum Dome Roofs: For large capacity Carbon Steel Above Ground Oil Storage Tank installations—particularly those utilizing an IFR, or those storing mid-range oils requiring robust external protection—we integrate Aluminum Dome Roofs. These self-supporting geodesic structures are lightweight, corrosion-resistant, and provide a superior, low-maintenance seal over the tank. Aluminum Dome Roofs offer exceptional structural load bearing capability against rain and snow, protecting the internal systems, preventing rainwater ingress, and offering a long life with reduced external maintenance compared to traditional steel roofs.
Venting and Safety Features: Tanks are equipped with precision calibrated pressure vacuum PV relief valves and emergency vents, which are essential for preventing structural damage from pressure fluctuations during operations or fire exposure, a core requirement of NFPA safety codes.
Center Enamel’s highly compliant Welded Steel Tanks are indispensable assets across critical global infrastructure segments:
Crude Oil and Intermediate Storage: Large-diameter API 650 tanks used at refineries, pipeline termini, and coastal terminals for bulk crude and processing feedstocks.
Refined Fuel Distribution: Storage of high-value gasoline, diesel, and jet fuel at pipeline hubs, distribution terminals, and aviation depots.
Industrial and Process Oil Storage: Containment of thermal fluids, lubricants, and specialized process oils in manufacturing, mining, and power generation facilities, often requiring integrated heating systems.
Waste Oil and Environmental Storage: Secure containment of used motor oils, waste hydraulic fluids, and other non-hazardous petroleum byproducts prior to recycling or disposal, often utilizing UL 142 double-wall designs.
Our distinction as a leading Carbon Steel Above Ground Oil Storage Tank Manufacturer is founded on a core commitment to precision engineering, comprehensive safety compliance, and deep understanding of fluid properties.
Unwavering API Code Adherence: Our engineering and fabrication processes are driven by the strict requirements of API 650 and API 620, ensuring every tank provides verifiable structural and leak-tight integrity, simplifying client acceptance and long-term regulatory compliance.
Expertise in Aluminum Dome Roofs: We provide seamless integration of superior Aluminum Dome Roofs for large tanks, offering clients a corrosion-resistant, low-maintenance, and structurally robust option for external protection, which is vital for maintaining product purity and minimizing operational downtime.
Integrated Fluid Management Systems: Our tanks are engineered with crucial features like sloped bottoms and provisions for heating systems, ensuring optimal water removal, sludge control, purity maintenance, and flowability across all stored petroleum products.
Advanced Welding and Testing Technology: The use of automated welding systems and certified NDT processes (radiography, ultrasonic testing) guarantees the highest metallurgical quality and structural integrity of the Welded Steel Tanks, minimizing potential defects associated with high-risk containment.
Global Quality Assurance: Our commitment extends beyond fabrication; we provide documented proof of all materials, welding procedures, and inspection results, ensuring absolute traceability and long-term confidence in the asset’s reliability.
For major energy companies, terminal operators, and engineering procurement construction (EPC) firms who require the highest standard of safety and structural integrity for their bulk liquid assets, Center Enamel is the definitive Carbon Steel Above Ground Oil Storage Tank Manufacturer.
Our Welded Steel Tanks solutions offer:
Certified Integrity: Guaranteed compliance with the rigorous design, fabrication, and testing mandates of API and UL standards.
Superior Protection: Option for robust, corrosion resistant Aluminum Dome Roofs for exceptional environmental defense and reduced maintenance.
Maximum Reliability: Verifiable NDT-confirmed welds and comprehensive corrosion defense systems for multi-decade service life.
We invite you to partner with Center Enamel to secure your critical petroleum storage needs with a Carbon Steel Above Ground Oil Storage Tank built for the global standard of excellence, safety, and operational longevity.