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.
A 1050 gallon 20 degree cone bottom tank with its poly stand, sold as one item
The Norwesco 1050 gallon 20 degree cone bottom tank with poly stand, part number 40359, is the tank and a polyethylene...
A 2500 gallon 15 degree cone bottom tank with a 3 inch outlet
The Norwesco 2500 gallon 15 degree cone bottom tank, part number 43065, is a white polyethylene tank 91 inches in diameter and 108...
The Enduraplas 550 Gallon White Cone Bottom Tank with Stand (SKU THC00550KW) is built for applications where you drain the vessel completely between batches. The cone bottom sits inside an integrated...
The Enduraplas 550 Gallon Black Cone Bottom Tank with Stand (SKU THC00550KB) is a full-drain vessel built for processes where you need the tank to empty completely - batching, settling, chemical...
The Enduraplas 550 Gallon Green Cone Bottom Tank with Stand (SKU THC00550KG) is a full-drain chemical storage and mixing tank built for operations that need to empty completely between batches. The...
A 2500 gallon 30 degree cone bottom tank for plant scale batching
The Norwesco 2500 gallon 30 degree cone bottom tank, part number 40066, is a white polyethylene tank 96 inches in diameter and 105...
A 1,250 gallon heavy duty cone bottom tank, 95 inches across and 70 inches tall
Snyder Industries part number 8310000N42 is a heavy duty 1,250 gallon cone bottom tank in natural white crosslinked...
A 1,000 gallon heavy duty cone bottom tank on a 64 inch footprint
Snyder Industries part number 5000000N42 is a heavy duty 1,000 gallon cone bottom tank in natural white crosslinked linear...
A 1,000 gallon black heavy duty cone bottom tank, 64 inches across
Snyder Industries part number 5000000N48 is a heavy duty 1,000 gallon cone bottom tank in black crosslinked linear polyethylene...
A low 1,000 gallon heavy duty cone bottom tank, 86 inches across and 66 inches tall
Snyder Industries part number 1890000N42 is a heavy duty 1,000 gallon cone bottom tank in natural white...
A 1,000 gallon black heavy duty cone bottom tank that stands 66 inches tall
Snyder Industries part number 1890000N48 is the black version of the low 1,000 gallon 1890000 heavy duty cone. It is...
A 2500 gallon heavy duty 15 degree cone bottom tank that drains completely
The Norwesco 2500 gallon 15 degree cone bottom tank, part number 43067, is a light blue high density linear polyethylene...