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 1320 gallon heavy duty cone bottom tank for batches that must drain clean
The Norwesco 1320 gallon 15 degree cone bottom tank, part number 44422, is a heavy duty polyethylene tank 91 inches in...
A 225 gallon heavy duty cone bottom tank on a poly stand, 43 inches tall, for chemical feed and small batches
Snyder part number 1560400N51 is a 225 gallon heavy duty cone bottom tank in black high...
A 225 gallon 30 degree cone bottom tank on its own stand, for liquids that must drain completely
SII-1560400N45 is Snyder's 225 gallon cone bottom tank with a 30 degree cone, sold with a stand. It...
A 500 gallon natural white heavy duty cone bottom tank
Snyder Industries part number 6190000N42 is a heavy duty 500 gallon cone bottom tank in natural white crosslinked linear polyethylene (XLPE)...
A 500 gallon black heavy duty cone bottom tank for small chemical batches
Snyder Industries part number 6190000N48 is a heavy duty 500 gallon cone bottom tank in black crosslinked linear...
The Chem-Tainer 500 Gallon Heavy Duty Cone Bottom Tank (SKU TC6568JA) is built for full-drain chemical and process service where you cannot leave a residual heel sitting in the bottom. It holds a...
A 550 gallon 20 degree cone bottom tank that arrives with its poly stand
The Norwesco 550 gallon 20 degree cone bottom tank with poly stand, part number 44649, is the tank and its polyethylene stand...
A 1720 gallon 15 degree cone bottom tank in heavy duty blue
The Norwesco 1720 gallon 15 degree cone bottom tank in light blue, part number 44424, is a high density linear polyethylene tank 91 inches...
The Chem-Tainer TC4246CB is a 250-gallon open top tank with a 20-degree cone bottom, molded in polypropylene for chemical service that needs full drainage. As a cone tank, the sloped floor discharges...
A 275 gallon 15 degree cone bottom tank that fits where a cone normally does not
Snyder part number 5740101N45 is a 275 gallon cone bottom tank in white polyethylene, 42 inches in diameter and 63...
A 120 gallon chemical feed station on its own stand, in white HDLPE
The Snyder Industries 120 gallon chemical feed station with stand, part number 5700104CFWS45, is a day tank for metering chemical...
A 1000 gallon black cone bottom tank that stays low, 66 inches tall
The Snyder Industries 1000 gallon heavy duty cone bottom tank, part number 1890000N51, is a black high density linear polyethylene...