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 8000 Gallon 15 Degree Plastic Cone Bottom Tank with Stand is built for high-volume batching, mixing, and full-drain process work where you need every gallon to move toward the outlet...
The Snyder Industries 5500 Gallon Black Heavy Duty Cone Bottom Tank (SKU 7040000N51) is a 1.9 specific-gravity cone bottom tank molded from High Density Linear Polyethylene, built to drain completely...
The Enduraplas 7000 Gallon 15 Degree Plastic Cone Bottom Tank with Stand (SKU THC07011KFG) is a large-volume cone-bottom vessel built for full-drain batching, mixing, and chemical storage where you...
The 7400 Gallon Heavy Duty Cone Bottom Tank from Snyder Industries is a 1.9 specific-gravity polyethylene vessel built for full-drain bulk chemical service. At 142 inches in diameter and 160 inches...
The 7400 Gallon Heavy Duty Cone Bottom Tank from Snyder Industries is a polyethylene cone bottom tank built for full-discharge bulk chemical service at scale.It stands approximately 160 inches...
The Enduraplas 7000 Gallon 15 Degree Cone Bottom Tank with Stand is a closed-top polyethylene tank built for full-drain chemical and process service where you need the contents to empty completely...
The Snyder Industries 5500 Gallon XLPE Cone Bottom Tank is built for full-drain chemical batching and bulk storage where you need every gallon to empty cleanly to the outlet.It holds 5,500 gallons in...
The Snyder Industries 5500 Gallon Black XLPE Cone Bottom Tank is built for bulk chemical storage where the contents need to drain completely and the resin has to stand up to aggressive solutions.It...
The Snyder Industries 6000 Gallon XLPE Heavy Duty Cone Bottom Tank is a crosslinked polyethylene (XLPE) cone bottom tank built for aggressive chemical storage and full self-draining discharge.It...
The Snyder Industries 6000 Gallon XLPE Heavy Duty Cone Bottom Tank is built for full-strength chemical duty: crosslinked linear polyethylene (XLPE) construction rated to 1.9 specific gravity, in a...
The Enduraplas 8000 Gallon White Cone Bottom Tank with Stand (SKU THC08000KW) is a full-drain vessel built for high-density chemical batching, mixing, and storage where you need the tank to empty...
The Enduraplas 8000 Gallon Black Cone Bottom Tank with Stand (SKU THC08000KB) is a full-drain vessel built for batching, dosing, and storage where you need every gallon to empty by gravity. The tank...