Cone-Bottom Tanks

Dura-Cast Products offers a full line of polyethylene cone-bottom tanks. They are seamless, lightweight, easy to clean, corrosion resistant, and rust-free.

Cone Bottom Tank with StandCone-bottom tanks are molded of polyethylene resin that is compounded with UV stabilizers to extend their life and durability. Our cone-bottom tanks are rotationally molded and manufactured to the highest quality standards in the industry.


  • Capacities from 25 to 1,100 gallons
  • Three duty ratings available: 1.5, 1.9, & 2.5 S.P.G.
  • Molded-in measurement graduations
  • Vented manway fitting on top
  • 45º cones for granular dry solids or liquids
  • Custom installation of optional drain fitting
  • Translucent Natural White color provides visible content level
  • FDA-compliant polyethylene for safe storage of water and foodstuffs
  • Three (3) year warranty against cracking, tearing, or splitting
  • Cone-bottom stands are available


Polyethylene cone-bottom tanks are primarily used for storage, where fast and complete drainage is important. With superior mechanical properties, high stiffness, excellent low temperature impact strength, and outstanding environmental stress crack resistance, they stand up well in tough environments.

Cone-bottom tanks have a high resistance to both physical and chemical attack, making them excellent containment vessels for a wide range of diverse contents, from aggressive corrosive chemicals to food products. They are often used to store a wide range of industrial chemicals, liquid fertilizers, liquid animal feeds, potable water, or liquid food products.


The overall general toughness and excellent chemical resistance of polyethylene to a wide array of wet and dry industrial chemicals and food products makes it ideally suited for storage tanks. Dura-Cast cone-bottom tanks are made with FDA-compliant UV-stabilized polyethylene. They comply with U.S. Food & Drug Administration regulation 21CFR 177.1520 (1) 3.1 and 3.2 for storage of potable water, allowing it to be used as a containment article for food products or water.

Cone-bottom tanks can be used indoors or outdoors. The resin is UV-stabilized to ensure it will not breakdown under harsh outdoor weather conditions or under prolonged exposure to fluorescent lights. The natural opaqueness of polyethylene permits easy viewing of content levels.

Because our tanks are rotomolded, they are a single piece, seamless, have consistent tank wall thickness, and are stronger at wall joints and corners. Each cone bottom tank comes equipped with a manway fitting installed on top of the tank.

Cone-bottom tanks are available with Standard (1.5 SPG), Heavy (1.9 SPG), and Super (2.5) duty ratings. Standard color is Natural White, but tanks can be ordered in green, gray, black, blue, or your choice of custom color.

Dura-Cast cone-bottom tanks are designed to withstand tough requirements required for consistent, quality, daily use for years to come.