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 Snyder Industries 1650 Gallon XLPE Heavy Duty Cone Bottom Tank is built for chemical service where ordinary polyethylene falls short.It carries a 1.9 specific gravity rating, holds 1,650 gallons,...
The Enduraplas 3200 Gallon White Cone Bottom Tank is a full-drain vessel built for process chemistry where you need every gallon to evacuate cleanly. Molded in natural white polyethylene with a 1.9...
The Enduraplas 3200 Gallon Black Cone Bottom Tank is a full-drain bulk vessel built for chemical service, rated to 1.9 specific gravity so it can hold dense process liquids that would overstress a...
The Enduraplas 3200 Gallon Green Cone Bottom Tank is built for full-drain bulk chemical storage, carrying the highest density rating in the Enduraplas cone bottom line: a 1.9 specific gravity rating...
The Snyder Industries 2000 Gallon Heavy Duty Cone Bottom Tank (SKU 5070000N51) is a full-drain black cone tank molded in High Density Linear Polyethylene with a 1.9 specific gravity rating, the...
The Norwesco 2500 Gallon 30 Degree Cone Bottom Tank with Poly Stand (SKU N-40672) is a closed-top polyethylene tank built for full-drain chemical batching and process work.It holds 2,500 gallons in a...
The Chem-Tainer 350 Gallon 20-degree cone bottom tank (SKU TC4260CB) is built for operations that need every gallon to drain - chemical batching, settling, and processes where solids and residual...
The Snyder Industries 2000 Gallon 30 Degree Cone Bottom Tank is built in cross-linked polyethylene (XLPE) and rated to 1.9 specific gravity, which is what makes it a true chemical-service cone tank...
The Snyder Industries 2000 Gallon XLPE Heavy Duty Cone Bottom Tank (SKU 5070000N48) is a 2000-gallon black cone bottom tank molded from crosslinked linear polyethylene (XLPE) and rated to 1.9...
The Snyder Industries 3600 Gallon Cone Bottom Tank (SKU 8050000N43) is built for full-drain chemical handling where you cannot leave residue sitting on a flat floor.Molded in natural white...
The Snyder Industries 3600 Gallon Black HDPE Cone Bottom Tank is a 1.5 specific-gravity cone bottom tank built for bulk chemical batching, full-drain mixing, and dosing applications where the entire...
The Chem-Tainer 750 Gallon 15 Degree Plastic Vertical Cone Bottom Tank (SKU TC6258CA) is an open-top, cone-bottom polyethylene tank built for full-drain chemical and process service where a...