Steel Underground Storage Tanks
for Chemicals
These chemical storage tank underground models are designed to last in an underground environment. Each model meets or exceeds the U.S. EPA's regulations for t
he underground storage of petroleum and chemicals. Furthermore, they are all constructed, tested, and labeled in accordance with Underwriters Laboratories, Inc. standards:
- UL-58: Standard for Safety Steel Underground Tanks for Flammable and Combustible Liquids
- UL-1746: External Corrosion Protections Systems for Steel Underground Tanks
Give our Granite Environmental Tech Team a call at (+1) 772.646.0597 or toll free at 888.703.9889
Looking for a Specific Tank?
We offer a wide variety of underground steel storage tanks to meet your specific needs. If you can't find the tank you desire, try our Product Search.Storage Tank Underground Model Standard Features:
- Capacities from 240-50,000 gal
- Steel Thickness from 10 gauge to 1 1/4"
- Single or Double Wall
- Stainless or Carbon Steel
- Horizontal or Cylindrical
- Exterior Full Fillet Lap Joints to add "ribbed" strength
- Striker Plates to protect the internal surface
- Seam Inspection
- 5 psi Factory Air Test
Highland Highguard:
This tank out-performs fiberglass polyester tanks as it doesn't require any artificial reinforcement. It is one of the toughest underground steel tanks Highland Tank has to offer.
The strong solvent/tar-free dielectric coating of high solids polyurethane allows for the safe storage of all motor and biofuels.
Highland ACT-100-U:
This tank combines steel strength with polyurethane coated protection. This combination provides a tank that is more resistant to incidental damage.
It meets or surpasses all of the current UL Standards and comes with an STI standard 10-year limited warranty.
Highland STI-P3:
The STI-P3 hass the most successful underground tank technology ever developed and has a maximum 120 degrees F temperature use rating. It is designed with a pre-engineered corrosion protection system that is established in three ways.
The STI-P3 comes with a standard 10 year warranty.
Would you like to speak with a Granite Environmental Rep? Give us a call at (+1) 772-646-0597 or toll free at (888) 703-9889 to chat about your storage tank underground model needs.
Highland High RES:
The Highland Tank High RES set the standards by which all other residential fuel tanks are measured. This top-of-the-line residential heating fuel tank features a polyurethane coating to protect against corrosion and is available with 305 or 360 degree containment. Highland Titan:
The Titan surpasses the performance standards of UL-1446 making this tank one of the most technologically advanced underground storage tanks available.
It features Highland's patented "fusion bond" technology to create a leak and damage-proof outer thermoplastic tank.
The Titan assures 100% secondary containment, motor/biofuel compatibility, reduced installation cost, and a 10-year limited warranty.
Highland HotShot:
The HotShot is designed specifically for the safe storage of heavy residual fuel oils like No. 6 fuel oil used for steam boilers and power generators. It allows the oil to easily flow for maximum burning efficiency.
The surface is protected against corrosion, has a high temperature resistive exterior coating, and a cathodic protection system.
Questions? Our Granite Environmental sales team would be happy to support you.
Call (+1) 772-646-0597 or toll free at (888) 703-9889 to discuss underground steel tanks or click on the chat button below for immediate response within our office hours (mon - fri, 8 am - 5 pm EST).












