The Enduraplas 6011 Gallon Green Cone Bottom Tank (SKU THC06011G) is built for bulk chemical service where you need full drainage and a heavy specific-gravity rating. This is a green polyethylene cone bottom tank with a 6,011-gallon working capacity, standing 125 inches tall on a 144 x 144 inch footprint. It carries a 1.9 specific-gravity rating, the number that lets it hold dense liquids that would overload a standard 1.5 SG tank. Engineers searching for an industrial cone bottom tank or a large-format cone tank land here because the cone discharge empties completely, leaving no settled product in the bottom.
Will it work for your application?
Start with the weight math, because that is what determines your stand and pad. Filled with water this tank weighs 50,132 lb, and at its full 1.9 SG rating it carries up to 95,250 lb of contents. That mass has to be supported by a cone bottom stand sized for this exact tank, not a generic frame. Before you buy, read the Cone Bottom Tank Stand Compatibility Matrix so the stand rating matches the loaded weight. Use the Tank Sizing Calculator and the Tank Sizing Guide to confirm the 6,011-gallon size fits your turnover and containment plan, and review the technical drawing on this page for overall dimensions. Because the pack carries no factory fitting schedule for this tank, confirm fitting locations and sizes with us before ordering.
Chemical compatibility
This is a polyethylene tank with a 1.9 specific-gravity rating. The resin is recorded as HDLPE, but because that value is unconfirmed, confirm HDLPE versus XLPE with us before committing the tank to chemical service - cross-linked and high-density linear polyethylene behave differently with certain chemicals. If you are comparing this against a standard 1.5 SG cone tank, the 1.9 rating is the reason to step up: it stores dense acids like 98% sulfuric and 85% phosphoric that would overload a 1.5 SG shell. Compatibility below is drawn from the OEM chemical-resistance chart and is concentration- and temperature-specific; verify your operating temperature and concentration against the chart for your chemical.
At the 1.9 SG rating, this tank can be specified for a wide range of dense and aggressive chemistries, including Sulfuric Acid at 98% (CPVC fittings, Viton gaskets), Phosphoric Acid at 85% (PVC, Viton), Hydrochloric Acid at 37% (PVC, Viton), Hydrofluoric Acid at 48% (PP/PVC, Viton), Hydrofluosilicic Acid at 26% (PP/PVC, Viton), Ferric Chloride at 50% (PVC, EPDM), Ferric Sulfate at 60% (PVC, EPDM), Ferrous Sulfate at 20% (PVC, EPDM), Aluminum Sulfate at 50% (PVC, EPDM), Sodium Hypochlorite below 16.5% (PVC, Viton), Hydrogen Peroxide at 50% (PVC, Viton), Peracetic Acid at 30% (316SS, Aflas), Potassium Hydroxide saturated (PVC, EPDM), Potassium Carbonate at 50% (PVC, EPDM), Sodium Carbonate at 30% (PVC, EPDM), Calcium Chloride at 40% (PVC, EPDM), Magnesium Chloride at 30% (PVC, EPDM), Acetic Acid at 60% (PP/PVC, EPDM), Sodium Thiosulfate at 40% (PVC, EPDM), Polyaluminum Chloride (PVC, EPDM), Sodium Bisulfate (PVC/PP, EPDM), Sodium Bisulfite (PVC/PP, EPDM), Zinc Orthophosphate (PP/316SS, EPDM), Ethylene Glycol at 100% (PVC, EPDM), Propylene Glycol (PP/316SS, EPDM), Urea Solution at 50% (PP/PVC, EPDM), DEF at 32.5% (316SS, EPDM), and ozonated water up to 10 PPM (PVC, EPDM; compatibility data on request). Match every fitting and gasket to the material listed for your chemical, and use the full Chemical Compatibility Database to verify before ordering.
The mistake to avoid
The most common error on a tank this size is treating the SG rating and the gasket metallurgy as afterthoughts. The 1.9 rating is what makes dense acids like 98% sulfuric or 85% phosphoric safe to store, so never substitute a lower-SG tank to save money. Just as important, most chemicals here run on the default PVC fitting with an EPDM gasket - the departures are the few you must catch in one pass: the oxidizers (hydrogen peroxide 50%, sodium hypochlorite below 16.5%, and the strong acids) require Viton, peracetic acid 30% calls for 316 stainless with Aflas, and DEF at 32.5% calls for 316 stainless fittings. Plan vent, fill, level, and drain placement on the cone top up front; see the Tank Top Fitting Placement Strategy and pair it with the right level instrument using the Tank Level Gauge Selection guide. For hazard labeling on a bulk chemical tank, work through the Tank Label and Signage Compliance guide.
This tank ships LTL freight from the nearest Enduraplas plant - Converse, TX or Neche, ND - with freight quoted live to your ZIP. Because a tank this heavy is freight-dominated, the Freight Cost Estimator routes from the closer origin (Texas for southern and western ZIPs, North Dakota for northern), which can move the number significantly. Get your quote with the Freight Cost Estimator or call 866-418-1777 to confirm the configuration before you order.
