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 3,000 gallon cone bottom tank with a 30 degree cone, rated 1.9
The Snyder Industries 3000 gallon 30 degree plastic cone bottom tank, part number 8360000N45, is a white high density linear...
A 5000 gallon Snyder cone bottom tank that drains to the last gallon
The Snyder Industries 5000 gallon cone bottom tank, part number 8050200C75501, is a natural white polyethylene vessel 102 inches...
A 4950 gallon 15 degree cone bottom tank for bulk liquid that has to drain clean
The Norwesco 4950 gallon 15 degree cone bottom tank, part number 45381, is a white polyethylene tank 102 inches in...
A 4,600 gallon 15 degree cone bottom tank in a light 470 lb shell
The Snyder Industries 4,600 gallon 15 degree cone bottom tank, part number 8050100N43, is a white high density linear polyethylene...
A 3600 gallon Snyder XLPE cone bottom tank in natural white
The Snyder Industries 3600 gallon XLPE cone bottom tank, part number 8050000N40, is moulded in crosslinked linear polyethylene, natural...
Snyder 3600 gallon black XLPE cone bottom tank, standard 1.5 wall
Part number 8050000N46 is Snyder Industries' 3600 gallon cone bottom tank in black crosslinked linear polyethylene with the standard...
A 3000 gallon cone bottom tank with its polyethylene stand, 95 inches across
Snyder part 8360037 is a 3000 gallon cone bottom tank in white high density linear polyethylene, supplied with its...
Twenty-six hundred gallons rated 1.9, in a natural white wall
The Snyder 5100000N42 is a 2,600 gallon cone bottom tank listed 90 inches long, 90 inches wide and 139 inches tall, at 570 pounds empty...
A 2,600 gallon black heavy duty cone bottom tank for liquids up to 1.9 specific gravity
Snyder Industries part number 5100000N48 is the heavy duty, black version of Snyder's 2,600 gallon cone on the...
A 4600 gallon Snyder cone bottom tank with its stand, on one order
The Snyder Industries 4600 gallon cone bottom tank with stand, part number 8050100C75507, is the natural white polyethylene cone...
The Enduraplas 3200 Gallon White Cone Bottom Tank with Stand (SKU THC03200KW) is a full-drain vessel built for chemical processing, batching, and dosing where you need every gallon to evacuate...
The Enduraplas 3200 Gallon Black Cone Bottom Tank with Stand (SKU THC03200KB) is a full-drain vessel built for chemical batching and storage where you need the tank to empty completely. The...