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 60 gallon chemical feed tank on a stand, pump room underneath
Snyder part number 5680024CFWS45 is a 60 gallon chemical feed station tank in white high density linear polyethylene, supplied on a...
A 750 gallon 45 degree cone bottom tank for batches that must drain to the last gallon
The Norwesco 750 gallon 45 degree cone bottom tank, part number 41495, is a natural white polyethylene tank 52...
A 1320 gallon 15 degree cone bottom tank for wide, low storage with a draining floor
The Norwesco 1320 gallon 15 degree cone bottom tank, part number 44339, is a white polyethylene tank 91 inches in...
The Chemtainer 55 Gallon 20 Degree Vertical Cone Bottom Tank (SKU TC2247BP) pairs a 55-gallon closed-top polyethylene cone tank with a matching poly stand, so the 20-degree cone bottom drains fully...
A 500 gallon black heavy duty cone bottom tank, 64 inches across and 63 inches tall, rated 1.9 specific gravity
Snyder part number 6190000N51 is a 500 gallon heavy duty cone bottom tank in black...
The Chemtainer TC3198JP is a 300-gallon, 20-degree closed-top cone bottom tank sold as a package with its matching poly stand, molded in natural white polyethylene, rated to a 1.5 specific gravity,...
A 500 gallon 45 degree cone bottom tank for batches that must empty completely
The Snyder Industries 500 gallon 45 degree HDPE cone bottom tank, part number 6190000N45, is a white polyethylene...
The Chemtainer 125 Gallon 15 Degree Vertical Cone Bottom Tank (SKU TC4235AP) is a closed-top polyethylene cone-bottom tank on a matching poly stand, built for batching and full-drain dispensing where...
A 1000 gallon 45 degree cone bottom tank for full drain batching
The Norwesco 1000 gallon 45 degree cone bottom tank, part number 43852, is a white polyethylene tank 72 inches in diameter and 89...
A 1720 gallon 15 degree cone bottom tank for big volume under a low roof
The Norwesco 1720 gallon 15 degree cone bottom tank, part number 44337, is a white polyethylene tank 91 inches in diameter...
A 500 gallon 30 degree cone bottom tank with its poly stand
The Norwesco 500 gallon 30 degree cone bottom tank with poly stand, part number 40289, is a natural white polyethylene tank 49 inches in...
A 1000 gallon black 45 degree cone bottom tank that drains to the last gallon
The Norwesco 1000 gallon 45 degree cone bottom tank in black, part number 44640, is a polyethylene mixing and storage...