Frequently Asked Questions

Assmann tanks are warrantied for five years from the date of purchase. Read all of the details of our warranty here.

Our tanks can be molded in crosslink polyethylene or FDA-approved linear polyethylene.

Assmann polyethylene tanks are designed and molded with a uniform wall thickness equal to or greater than the minimum thickness requirement per the Barlow Formula.

The average life expectancy of a polyethylene tank is 15-20 years or even longer depending upon a variety of factors, such as which chemical is stored and use of proper ventilation.

Good question! The answer to this varies depending on the type of tank. Please view individual product pages for unique specification information, or give us a call for custom solutions!

We can provide 3D drawings upon request. However, we also offer drawings of our tanks in multiple formats, such as AutoCAD and PDF.

We offer technical documents for additional information about the most common chemicals stored in Assmann polyethylene storage tanks. Additionally, we have a full list of chemicals in the back of our brochure. If you have trouble finding a certain chemical, contact us for further assistance.

We do not manufacture FRP tanks. However, our tanks perform similarly to FRP tanks, and in most applications, they are more cost effective. Contact us about your storage needs and we’ll give you direction on which tank material is the best fit for you.

We sell our products through an extensive network of distributors and representatives. Additionally, we have regional managers and a full internal support team that can help answer your questions. After reaching out to us, a representative specific to your area and industry will be in contact to help you find the right storage solution.

Double wall polyethylene storage tanks provide the best protection against hazardous chemical spills into the environment, especially for corrosive chemicals like caustic soda. The inner tank dome overlaps the outer tank sidewall to help prevent rainwater, snow, and debris from entering the containment basin, making them some of our safest tanks. Browse Assmann double wall storage tanks here. Explore Assmann sodium hydroxide storage solutions here.

A double wall tank system has two walls of polyethylene — one inner shell and one outer shell. The inner shell contains the liquid, while the outer shell acts as an extra layer of protection against leaks and spills. Because of this, double wall tanks are among the safest choices for storing hazardous chemicals such as:

• Sulfuric acid (fertilizer/industrial processing agent)
• Hydrochloric acid (used in fertilizers, dyes, and plastics)
• Inorganic acids (used in fertilizers, metal finishing, and batteries)
• Hydrofluosilicic acid (drinking water treatment)
• Hydrogen peroxide (disinfecting and cleaning)
• Peracetic acid (medical tool sterilizer)
• Sodium hydroxide (caustic soda used in soap/petroleum)
• Sodium hypochlorite (bleach)
• Liquid ammonium sulfate (fertilizer)
• Alums and polymers (waste and wastewater)
• Diesel exhaust fluid (emission reduction)
• Sodium chloride (de-icing chemical)
• Potassium acetate (de-icing chemical)
• Calcium chloride (de-icing chemical)
• Leachate and condensate (from landfills and gas extraction)
• Concrete additives (improve strength/durability)

Browse Assmann double wall containment tanks here.

Double wall tank systems are built with an inner and an outer shell. That means they have an extra layer of security, minimizing leaks, simplifying regulatory compliance, and protecting against chemical corrosion or accidental damage. Double wall tanks can also help you be more efficient with space constraints, since they don’t require an external berm or secondary containment area. Browse Assmann double wall tank systems here.

A double wall tank and a secondary containment basin serve similar purposes in different ways. A double wall storage tank is built with an inner and an outer shell. The inner shell holds the chemical or liquid, while the outer shell provides immediate containment in the case of tank failure or leakage. Browse Assmann double wall storage tanks here.

A secondary containment area/basin is a separate structure (like a concrete pad with walls, earthen berm, or lined area) that surrounds a single wall tank to catch spills or leaks.  Browse Assmann secondary containment areas here.

Yes, if you are storing hazardous materials, secondary containment (like a double wall polyethylene tank) is required by the EPA and local regulators to prevent soil or groundwater contamination. Choosing a double wall containment tank means you don’t have to add a secondary containment area, saving you space in tight areas and simplifying installation. Browse Assmann double wall storage tanks here.

Assmann double wall storage tanks provide the best protection against hazardous chemical spills into the environment. The inner tank dome overlaps the outer tank sidewall to help prevent rainwater, snow, and debris from entering the containment basin, making them among our most safe tanks. Assmann double wall containment tanks are designed with wall thicknesses equal to or greater than that required by ASTM D-1998 standards. Browse Assmann double wall storage tanks here.

Tie down systems secure tanks against wind, seismic activity, and movement, especially important for storage tanks and double wall storage tanks in outdoor or unstable areas. Assmann offers tie down systems specifically designed around the jobsite criteria and building codes. See Assmann’s restraint and tie down system specs and more here.

A conical tank is a funnel shaped conical plastic bottom with a 30- to 45-degree slope molded in, along with gallon markers and access openings. Conical storage tanks provide complete drainage of chemicals through the funnel-shaped bottom. These tanks are often used for blending and mixing chemicals. They also offer excellent low-temperature resistance, UV stability against degradation, and conform to ASTM D1998 standards for liquid containment. Browse Assmann conical bottom tanks here.

Use LLDPE and XLPE double wall tanks specifically rated for oxidizing agents like hydrogen peroxide, with UV protection and venting systems. Learn more about safe hydrogen peroxide storage best practices, or explore Assmann’s double wall tank options to find a solution that meets EPA and chemical safety guidance. Browse Assmann double wall storage tanks here.

Assmann creates polyethylene chemical and industrial bulk storage tanks that deliver first and foremost on quality that lasts. Unlike other polyethylene tank companies, Assmann uses non-shielded molds with low temperature heat and gradual air cooling. It might take a little more time and effort, but we’ll never abandon successful production methods for cost-cutting measures. In the end, that means every single time, you get a storage tank you can count on for years — even decades — to come. Learn more about what sets Assmann apart from other American chemical storage tank companies here.