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 3900 Gallon Cone Bottom Tank (SKU 5440000N49) is a black polyethylene cone-bottom vessel rated to 1.5 specific gravity, built for full-drain dosing and batch chemical service...
The Norwesco 6000 Gallon 15 Degree Cone Bottom Tank in black is built for full-drain bulk chemical storage where you cannot leave product sitting on a flat floor.At 6,000 gallons in a 102 by 102 inch...
The Snyder Industries 3900 Gallon XLPE Cone Bottom Tank is a crosslinked polyethylene tank built for full-drain chemical service, rated to 1.5 specific gravity in natural white.It measures 90 x 90...
The Snyder Industries 3900 Gallon XLPE Cone Bottom Tank is built for full-drain bulk chemical storage and metering. It molds in crosslinked linear polyethylene (XLPE) carrying a 1.5 specific gravity...
The Norwesco 5500 Gallon 30 Degree Cone Bottom Tank (SKU N-40549) is a 5,500-gallon polyethylene cone bottom tank built for full-drain chemical handling. It stands 148 inches tall on a 119 x 119 inch...
The Chem-Tainer 2000 Gallon 15-degree open-top cone-bottom tank is a polyethylene bulk vessel built for full-drain chemical and process service where you need solids and residual liquid to move...
The Enduraplas 4000 Gallon White Cone Bottom Tank with Stand (SKU THC04000KW) is a full-drain, SG 1.9-rated polyethylene vessel built for processing and chemical batching where you need the tank to...
The Enduraplas 4000 Gallon Black Cone Bottom Tank with Stand (SKU THC04000KB) is a full-drain chemical storage and batching tank built for operations that need every gallon to empty cleanly through...
The Enduraplas 4000 Gallon Green Cone Bottom Tank with Stand is a full-drain vessel built for chemical batching, blending, and dosing where the tank must empty completely through the bottom. Standing...
The Norwesco 6000 Gallon 15 Degree Cone Bottom Tank (SKU N-40931) is a 1.5 specific-gravity polyethylene cone-bottom vessel built for full-drain batch and chemical-feed work where you need every...
The Enduraplas THC0711WH is a 7,011-gallon, 15-degree cone bottom storage tank built for high-volume batching, mixing, and full-drain chemical handling where the contents need to empty completely...
The Enduraplas 7011 Gallon Natural White Cone Bottom Tank is the bulk-volume vessel for full-drain chemical processing, where every gallon has to leave the tank and nothing settles in the bottom...