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 Enduraplas 1100 Gallon White Cone Bottom Tank with Stand (SKU THC01100KW) is a full-drain vessel built for processing and dosing work where you need every gallon to gravity-feed out the bottom...
The Enduraplas 1100 Gallon Black Cone Bottom Tank with Stand (SKU THC01100KB) is built for full-drain chemical batching, dosing, and metering, pairing a 1.9 specific gravity polyethylene tank with an...
The Enduraplas 1100 Gallon Green Cone Bottom Tank with Stand (SKU THC01100KG) is a full-drain vessel built for process and chemical duty where you need to empty the tank completely between batches...
The Snyder Industries 1600 Gallon Heavy Duty Cone Bottom Tank is built for full-drain chemical processing where you need every gallon out the bottom and nothing left to settle. Molded in black...
The Snyder Industries 850 Gallon 15 Degree Cone Bottom Tank is a closed-top polyethylene cone bottom tank built for bulk chemical storage and full-drain dispensing. It carries a 1.9 specific gravity...
The Enduraplas 1100 Gallon 15 Degree Cone Bottom Tank with Stand (SKU THC01100K) is built for processes where the tank needs to drain completely — mixing, batching, settling, and dosing applications...
The Snyder Industries 1500 Gallon 45 Degree HDPE Cone Bottom Tank is built for batch chemical service that has to drain clean.The 45-degree cone drives solids and liquid toward the center outlet so...
The Norwesco 3000 Gallon 15 Degree Cone Bottom Tank (SKU N-45141) is built for full-drain chemical and process service where you cannot leave product sitting in the bottom.The shallow 15-degree cone...
Three thousand gallons over a 15 degree cone: this Enduraplas molding is a full-drain processing and storage tank for operations where residue left in a flat-bottom tank is money lost - fertilizer...
The Enduraplas 3000 Gallon White Cone Bottom Tank is a full-drain vessel built for process and chemical service where you need every gallon out the bottom. It holds 3,000 gallons in a polyethylene...
The Enduraplas 3000 Gallon Black Cone Bottom Tank is a full-drain process vessel built for the chemicals that ruin water-grade tanks. It carries a 1.9 specific gravity rating, which is what lets it...
The Enduraplas 3000 Gallon Green Cone Bottom Tank is the heavy-duty version of the 3000-gallon cone tank, built for full-drain chemical service where you cannot leave residue in the bottom of the...