Steel tank with an external urethane coating

ACT-100-U® features a strong inner steel tank for structural integrity, and a thick urethane outer coating for long‐lasting corrosion protection. The ACT‐100‐U® provides a barrier from corrosion comparable to a fiberglass reinforced plastic coated (composite) steel tank.

ACT-100-U® Features

  • Meets UL 58, UL 1746‐Part 4 for Coated Tanks and ULC‐S603.1
  • A high‐voltage holiday test of the coating assures that the steel is isolated from corrosive soils
  • Can be used with a variety of leak detection systems
  • Steel provides complete compatibility with all blends of ethanol and biodiesel fuels
  • Impermeable to all petroleum products and vapors
  • Flat end design reduces the cost of installation and increases site layout flexibility
  • Steel inner tank provides structural strength, while its thick urethane coating prevents corrosion
  • Various backfill options allow for money‐saving installation
  • Capacities range up to 60,000 gallons
  • Single or double‐wall steel construction

ACT-100-U® Benefits

  • Steel construction allows for recycling
  • Low cost compartments and customization
  • Built to nationally‐recognized STI standards with strict third‐party quality control inspection program

ACT-100-U® is available from an extensive group of Steel Tank Institute fabricators who participate in the STI Quality Control Program. Under the program, independent quality control inspectors make unannounced visits to STI members, ensuring fabrication to the highest possible standards.


  • ACT-100-U
  • Tank Technologies
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