API and Non-Code Tanks
When UL and ULC Aren’t the Answer: Explore API and Custom Non-Code Tank Solutions
UL (Underwriters Laboratories) and ULC (Underwriters Laboratories of Canada) certifications represent the gold standard in tank safety and performance. These independent organizations rigorously test and certify tanks to ensure compliance with strict safety, reliability and durability standards. UL and ULC-listed tanks are widely recognized across industries and provide peace of mind by ensuring adherence to established safety guidelines. For applications requiring stringent regulatory compliance, UL and ULC-certified tanks are the ideal choice. But sometimes UL and ULC tanks are not the perfect tank for the application. In these cases, we lean on our API and non-code tanks for the right solution to the application.

API Tanks 

Tanks designed to meet API (American Petroleum Institute) standards are vertical tanks specifically tailored to the demanding requirements of the oil and gas industry. API standards cover various aspects of tank design, fabrication and inspection, ensuring robust performance in critical applications. AGI Westeel offers API tanks with a unique advantage—our API Modified design. These shop-fabricated tanks integrate API standards with elements of UL and ULC criteria, achieving compliance with industry regulations while providing added flexibility to adapt to specific project needs or site conditions. This hybrid approach allows AGI Westeel to deliver tanks that meet the highest safety and performance standards without compromising on customization. 

Non-Code Tanks 

Non-code tanks, while not built to formal regulatory standards like UL, ULC, or API, are designed to meet specific operational needs where certification is not a requirement. These tanks are ideal for applications that prioritize custom designs or performance over formal certification. AGI Westeel’s non-code tanks maintain a high level of quality and reliability, offering a cost-effective solution for industries or projects that do not require strict regulatory oversight. Whether you need a custom size, unique configuration, or a solution for a niche application, our non-code tanks provide the adaptability to meet your needs without unnecessary constraints. 

Why Choose AGI Westeel Tanks? 

AGI Westeel combines decades of engineering expertise with cutting-edge manufacturing processes to deliver a broad range of steel tanks, including UL, ULC, API Modified and non-code options. Our tanks are designed with durability and performance in mind, ensuring they meet the unique demands of your application. Whether your priority is regulatory compliance, project flexibility or tailored design, AGI Westeel has the solution to match your requirements. 
Available Configurations
*Maximum capacity can vary based on factory cranage weight limits.
Max Capacity*
Max Diameter/Width
Max Length
Multiple Compartments
Horizontal Tanks
Max Capacity* 200,000L
Max Diameter/Width 4m (144”)
Max Length 16m (576”)
Multiple Compartments Yes
Vertical Tanks
Max Capacity* 200,000L
Max Diameter/Width 4m (144”)
Max Length 16m (576”)
Multiple Compartments No
Rectangular Tanks
Max Capacity* 100,000L
Max Diameter/Width 3m (120”)
Max Length 9m (480”)
Multiple Compartments Yes

Tanks can be purchased in three ways: 

  1. Tank-only for simplified applications or end-user supply. 

  2. Standard configurations including pumps, nozzles, meters and optional equipment. 

  3. Custom configurations turnkey or near-turnkey solutions tailored to client specifications and site requirements. 

Key Features 

API and non-code tanks are designed for durability, safety and ease of operation, featuring: 

  • Durable steel construction with a corrosion-resistant coating for extended longevity. 
  • Optional secondary shell providing a minimum of 100% containment for added environmental protection. 
  • Optional interstitial space inspection port for efficient monitoring. 
  • Optional unistrut tabs for mounting additional equipment. 

Typical Applications 

API and non-code tanks are essential in industries such as: 

  • Oil and Gas 
  • Chemical processing 
  • Food processing 
  • Edible oil storage 
  • Mining 
  • Water treatment 
  • Wastewater management 
  • Firefighting 
  • Fuel distribution  
  • Power generation 

Proven Legacy 

AGI Westeel has been at the forefront of tank manufacturing for over seven decades, combining engineering excellence with innovative design. Choose the AGI Westeel aboveground steel tank line for a storage solution that offers unmatched quality, flexibility, and peace of mind. 

 

Gravity Flow Tanks 

Gravity flow tanks are ideal for fluid storage and dispensing applications that do not require ULC certified storage and require the use of gravity to drain the tank. NOTE: gravity flow tanks are not recommended for use with flammable or combustible liquids where secondary containment is not in place. 

Gravity tank Westeel DWPhoto_20140905_0065.jpg

Single Wall Gravity Flow Tanks 

Gravity Flow Horizontal Single Wall AST.png

Dual Wall Gravity Flow Tanks 

Gravity Flow Horizontal Double Wall AST.png

Gravity Flow Stands Gravity Flow Tank Stands.png

Gravity Flow Stand Safety Ladders 

Gravity Flow Safety Ladders.png

Econo-Vault 

Econo-Vault tanks are dual wall non-code designs created for fluid storage and dispensing applications that do not require ULC certified storage and are mounted at grade. Common in oil and gas applications, the Econo-Vault is 110% contained. 

Econo Vault.png
Tank Options and Features
Standard vs. custom tanks
Standard vs. custom tanks AGI Westeel offers standard tanks for basic needs and custom tanks tailored for complex projects. Our experts help determine the best solution, ensuring optimal performance whether a standard or fully customized tank is required.
Engineering, project management and design excellence
Engineering, project management and design excellence AGI Westeel provides custom tank solutions with expert engineering, project management, and design. Our certified tanks meet UL/ULC standards, integrate seamlessly into projects, and we offer sealed drawings for custom load, structural and seismic requirements beyond standard certifications.
Flammable and combustible liquids
Flammable and combustible liquids Our UL and ULC-listed aboveground steel tanks provide safe, compliant storage for a variety of industrial fluids beyond diesel and gasoline, including oils, solvents, biofuels and chemicals, offering durable, customizable solutions for diverse applications.
Catwalks and accesses
Catwalks and accesses AGI Westeel offers custom-designed access systems for steel aboveground tanks, including catwalks, ladders, and staircases. These versatile solutions ensure safety, durability and easy access, with options for horizontal, rectangular or vertical tanks.
Turnkey systems
Turnkey systems AGI Westeel offers turnkey steel aboveground tanks with factory-installed accessories like pumps, dispensers, and control rooms. Our streamlined process includes approval drawings, shop fabrication and pre-assembled components, ensuring quick onsite assembly and efficient operation.
Stainless steel tanks & accessories
Stainless steel tanks & accessories AGI Westeel's stainless steel tanks offer superior corrosion resistance for harsh environments. Available in single and dual-wall configurations, with pickled and passivated internal surfaces, they meet ULC certifications and are ideal for DEF storage, chemicals, aviation fuels and marine applications.
Static head tanks
Static head tanks AGI Westeel's static head steel aboveground tanks are engineered to withstand high-pressure filling from elevated heights, with dished ends for enhanced strength. Available in UL/ULC dual-wall designs, they are ideal for sub-grade installations in commercial structures.
Power generation
Power generation Our steel aboveground tanks provide reliable fuel storage for power generation, including diesel, day and generator base tanks. Essential for urban skyscrapers and rural areas, they ensure uninterrupted power during outages, meeting growing demands for backup systems.
Aviation tanks
Aviation tanks AGI Westeel offers durable, customizable aboveground steel tanks for aviation fuels, compliant with Canadian and U.S. regulations. Tanks feature epoxy or stainless steel linings for corrosion resistance, meet environmental standards and are secondary contained.
Epoxy lining
Epoxy lining Epoxy-lined aboveground steel tanks provide superior yet economical corrosion resistance for storing aviation fuels, chemicals and corrosive fluids. For smaller tanks under 5,000L (1,315G), stainless steel liners offer a cost-neutral alternative when fluid compatibility allows, ensuring durability and reduced maintenance.
Tank insulation and cladding
Tank insulation and cladding AGI Westeel offers heating and insulation solutions for aboveground steel tanks, including electric heaters, heat trace, mineral wool insulation, Tex Shield Polyurea (diesel-compatible), advanced controls integration and more, ensuring precise temperature management and freeze protection in demanding environments.
Powder coating
Powder coating AGI Westeel’s proprietary powder coating system offers superior durability, with optional zinc epoxy base coat for corrosion resistance. Tanks over 10,000L (2,600G) include, as standard, reclaim sandblast plus powder application, ensuring long-lasting protection and reduced maintenance.
Tank Skids
Tank Skids AGI Westeel’s tank base skids offer durable support with options like standard, heavy-duty, or live roll skids. Customizable with platforms, pumps, seismic anchoring, and more, they’re ideal for gravel bases, temporary setups, or permanent installations.
Vacuum-monitored tanks
Vacuum-monitored tanks AGI Westeel’s vacuum-monitored dual-wall tanks ensure continuous leak detection, safeguarding structural integrity and the environment. With manual or electronic monitoring options, they enhance safety, efficiency and environmental security while reducing maintenance costs and preventing contamination risks.
Containment basins
Containment basins Steel containment basins ensure spill containment for aboveground tanks and external plumbing leaks. Used with single and dual-wall tanks in indoor or monitored spaces, they are customizable and available on request for enhanced environmental protection and regulatory compliance.
Product Resources
Fuel & Flammable - Combustible Liquid Storage Brochure
Support
Customer Support (1-800-665-2099) Email Customer Support Petroleum Tank Contact Form Top Tips for Fuel Tank Replacement Project Profile Article
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