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 Chem-Tainer 1000 gallon 20-degree open-top cone-bottom tank (SKU TC6672CA) is a polyethylene vertical built for bulk chemical batching where you need the contents to drain to a near-empty heel...
The Snyder Industries 2500 Gallon 30 Degree Plastic Cone Bottom Tank (SKU SII-5110000N45) is built for full-drain chemical and process service where you need the contents to empty completely and...
The Snyder Industries 2500 Gallon Heavy Duty Cone Bottom Tank (SKU 5110000N51) is built for full-drain chemical batching and dosing where you need every gallon to evacuate. Molded from high density...
The Snyder Industries 2500 Gallon Heavy Duty Cone Bottom Tank (SKU 8350000N51) is a 1.9 specific-gravity black cone tank molded from High Density Linear Polyethylene for full-drain chemical and...
The 2500 Gallon 30 Degree HDPE Cone Bottom Tank with Poly Stand is an Enduraplas cone-bottom vessel built for full-drain batching, mixing, and dosing where you need the contents to empty completely...
The Norwesco 3000 Gallon 30 Degree HDPE Vertical Cone Bottom Tank ships with a matching poly stand so the full 30-degree cone drains under gravity - the reason processors choose a cone bottom over a...
The Enduraplas THC02520K is a 2,520-gallon vertical cone bottom tank with a 15-degree cone and an integrated stand, built for full-drain batching and metering where the tank needs to empty completely...
The Norwesco N-40797 is a 3000 gallon, 30-degree cone bottom tank molded from polyethylene, standing 134 inches tall on a 96-inch (8-foot) diameter footprint.The steep 30-degree cone is built to...
The Enduraplas 3000 Gallon 30 Degree HDPE Vertical Cone Bottom Tank ships with a matching poly stand so the full 30-degree cone drains to a single low point - the reason processors choose a cone...
3,600 gallons on a 15 degree cone: full drain without the height penalty
A cone bottom tank exists to empty completely. The Snyder 8050000N45 does it with a 15 degree cone under a 102 inch diameter...
The 3000 Gallon 30 Degree HDPE Cone Bottom Tank from Snyder Industries is a 3000-gallon white polyethylene cone bottom tank built for full-drain chemical and process service. It stands 144 inches...
The Snyder Industries 3000 Gallon Heavy Duty Cone Bottom Tank (SKU 5150000N51) is a black high-density linear polyethylene cone tank built for full-drain chemical and process duty, rated to 1.9...