Cone-bottom (also called cone-bottom or full-drain) polyethylene tanks are engineered for applications where complete sediment evacuation, batch mixing, or downstream dosing matters. The angled bottom — 15°, 22.5°, 30°, 45°, or 60° from horizontal — drives settled solids toward the centerline drain and lets you empty the vessel to a true zero residual. Our catalog covers every active SKU from Norwesco, Snyder Industries, Chem-Tainer, Enduraplas, and Bushman.
Applications
Batch mixing of fertilizers, surfactants, and process chemicals — solids settle and drain cleanly
Chemical inductor / dissolution service — dry chemical mixing into water before spray
Wastewater pre-treatment — solids drop-out and decant
Slurry storage and dewatering — sand, polymer, sediment ponds
Total-drain chemical feed for metering pumps (no dead-leg residue)
Compliance & Standards
Typically rotomolded to ASTM D1998; FDA 21 CFR 177.1520 resin compliance varies by model (see each product's Specifications). Cone bottoms must be supported by a properly rated steel stand — every cone-bottom tank is shipped with or sized for a matching stand (verify on each listing). Stand height equals cone height plus minimum 6" clearance for valve/discharge piping. Confirm working SG rating against your fluid; cone-bottom geometry concentrates head pressure at the centerline drain.
Engineering & Selection
Cone angle directly governs how cleanly your tank will drain. 15° works for free-flowing liquids only. 22.5°–30° is the sweet spot for most chemical and fertilizer service. 45°–60° is required for slurries, settled solids, or viscous fluids — anything that won't self-flow at shallower angles. Steeper cone means taller overall height and a taller stand, so verify ceiling clearance before ordering. Outlet sizing scales with intended flow rate: 2" for gravity discharge to drum, 3"–4" for pump suction or batch transfer.
Freight & Delivery
Tanks ship LTL motor freight from the closest stocking warehouse to your delivery ZIP. Typical transit 5–10 business days. Liftgate available at delivery (per-shipment fee). Always inspect at delivery and note damage on the bill of lading before signing — that is the carrier claim trigger. Bulk-order consolidation reduces per-tank freight 25–40%. Get your LTL freight quote by ZIP, or call 866-418-1777 for same-business-day quoted pricing.
Sizing & Selection
Capacity first, cone angle second, stand height third. Need help matching cone angle to your fluid? Call 866-418-1777 with your fluid, viscosity, and dosing requirements.
The Chemtainer 200 Gallon 20 Degree Open Top Cone Bottom Tank (SKU TC3175AP) is built for chemical batching and full-drain dosing where you need every last drop out the bottom.It stands 75" tall on a...
The Snyder Industries 35 Gallon Chemical Feed Station Tank (SKU SII-1000124CFWS45) pairs a 35-gallon high density linear polyethylene tank with an integrated stand, giving you an off-the-floor mixing...
The 35 Gallon XLPE Chemical Feed Station Tank with Stand (Snyder Industries SKU SII-1000124CFWS42) is a compact, self-supporting station for metered chemical dosing where floor space is tight and the...
The 750 Gallon 20 Degree Cone Bottom Tank from Norwesco (SKU N-40811) is a closed-top, full-drain vessel molded in white polyethylene, rated to a specific gravity of 1.5. It holds 750 gallons, stands...
The Norwesco 1020 Gallon 15 Degree Cone Bottom Tank is a vertical HDPE cone-bottom built for chemical service and full drainage. It holds 1,020 gallons, stands 53 inches tall on a 91-by-91-inch...
The Snyder Industries 60 Gallon HDLPE Chemical Feed Station Tank with Stand (SII-5680024CFWS45) is a specialty feed-station unit that ships as a white High Density Linear Polyethylene tank on an...
The Norwesco 750 Gallon 45 Degree Cone Bottom Tank (SKU N-41495) is a 750-gallon white polyethylene cone bottom tank built for chemical dosing, batching, and full-drain handling where you cannot...
The Snyder Industries 500 Gallon 45 Degree HDPE Cone Bottom Tank in White is built for service where the contents drain themselves out the bottom and you walk away with a clean tank. The steep...
The Enduraplas 1100 Gallon White Cone Bottom Tank is built for full-drain chemical batching, mixing, and dosing where you need every drop to evacuate the bottom outlet. This is a true cone bottom...
The Enduraplas 1100 Gallon Black Cone Bottom Tank is built for full-drain bulk chemical service where you cannot leave sediment or product sitting in the bottom. Molded in black polyethylene with a 1...
The Enduraplas 1100 Gallon Green Cone Bottom Tank (SKU THC01100G) is a cone bottom polyethylene vessel built for batching, dosing, and full-drain chemical service where you need every gallon to...
The Norwesco 1320 Gallon 15 Degree Cone Bottom Tank (SKU N-44339) is a 1.5 specific-gravity polyethylene vessel built to fully drain its contents through a sloped 15-degree floor, making it the...