API 650, API 620, API 12D Tanks

Advance Tank specializes in the design, fabrication and erection of Above Ground Welded Steel Storage Tanks for use in industrial applications. Typically, our industrial field erected tanks are built to API 650, API 620 and API 12D standards. API has created standards for the design, fabrication and erection of Above Ground Welded Steel Storage Tanks for Oil Storage. API utilizes three standards for field erected tanks; API 650, API 620 and API 12D. At Advance Tank we specialize in building to these API standards.

API 650 Tanks

The most common standard used is API 650. API 650 tanks are commonly used for oil, gasoline, chemical and produced water storage. You will find these tanks located throughout the United States in refineries, terminals, pipelines and production facilities. The API 650 standard governs how tanks are designed, processed, welded, inspected and installed.

API 620 Tanks

API 620 is a design standard which governs the design and construction of large welded steel, low pressure storage tanks. API 620 storage tanks operate at 250°F or less with an operating pressure more than 2 ½ lbf⁄in² and less than 15 lbf⁄in² gauge.

API 12D Tanks

API 12D, Specification for Field Welded Tanks for Storage of Production Liquids, is probably the least known of the three standards. This standard is to field erected tanks as API 12F is to shop built tanks. API 12D predetermined tank dimensions and storage capacities, along with accessories and testing requirements. By creating fixed sizes and requirements, the API 12D has eliminated the need for further engineering, effectively reducing the cost of the tanks.

For over 40 years we have been assisting customers from coast to coast with their API tank needs. With in-house engineering and PE stamp capabilities, experienced drafters, complete fabrication capabilities and field crews located throughout the country, we can build API 650, API 620 or API 12D tanks anywhere, any time. We have designed, fabricated and erected API tanks from 8’ in diameter to 300’ in diameter.

Advance Tank also offers full turnkey project solutions. We regularly design and install our own tank foundations, liners and subcontract CP systems, coatings and insulation. Call today for more information on Advance Tank and Construction Company.

Advance Tank API 650, API 620 and API 12D Products

  • Tank foundations and secondary containment
  • Cone Roof Storage Tanks: Field Erected – Carbon or Stainless Steel
  • Umbrella Roof Storage tanks: Field Erected – Carbon or Stainless Steel
  • Open Top Storage Tanks: Field Erected – Carbon or Stainless Steel
  • Pontoon Floating Roofs
  • Double Deck Floating Roofs
  • Aluminum Floating Roofs
  • Shoes Seals
  • Secondary Seals
  • Wiper Seals
  • Roof Drain Hoses
  • Foam Chambers
  • Tank Coatings
  • Tank Insulation