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 Enduraplas 3200 Gallon Green Cone Bottom Tank with Stand (SKU THC03200KG) is a full-drain vessel built for batching, mixing, and chemical dosing where you need the tank to empty completely.It...
A 4950 gallon 15 degree cone bottom tank for heavy liquids under a low roof
Part number 45383 is Norwesco's 4950 gallon cone bottom tank with a shallow 15 degree cone, moulded in light blue high...
A 5,000 gallon 15 degree cone bottom tank in a light 550 lb shell
The Snyder Industries 5,000 gallon 15 degree cone bottom tank, part number 8050200N43, is a white high density linear polyethylene...
A 3,000 gallon natural white heavy duty cone bottom tank on a 90 inch footprint
Snyder Industries 5150000N42 is a 3,000 gallon cone bottom tank with the heavy duty wall, moulded in natural white...
A 3,000 gallon heavy duty cone bottom tank, 95 inches wide and 120 inches tall, built in California
Part number 8360000N42 is Snyder Industries' 3,000 gallon heavy duty cone bottom tank in natural...
A black 3,000 gallon heavy duty cone bottom tank for dense, light sensitive liquids
Snyder Industries 5150000N48 is a 3,000 gallon black cone bottom tank with the heavy duty wall, moulded in...
A black, low profile 3,000 gallon heavy duty cone bottom tank from Chowchilla, CA
Snyder Industries part number 8360000N48 is a 3,000 gallon black heavy duty cone bottom tank in crosslinked linear...
A 5000 gallon cone bottom tank that arrives with its stand
The Snyder Industries 5000 gallon cone bottom tank with stand, part number 8050200C75507, is a natural white polyethylene tank 102 inches...
The Chem-Tainer 1500 gallon 15 degree open top cone bottom tank is a vertical polyethylene tank rated to 2.0 specific gravity. The 15-degree sloped cone bottom keeps settling solids and slurries...
A 4,600 gallon 15 degree cone bottom tank rated for liquids up to 1.9 specific gravity
The Snyder Industries 4,600 gallon 15 degree cone bottom tank, part number 8050100N45, is a white polyethylene...
A 5,000 gallon 15 degree cone bottom tank rated for liquids up to 1.9 specific gravity
The Snyder Industries 5,000 gallon 15 degree cone bottom tank, part number 8050200N45, is a white polyethylene...
A 5,000 gallon 15 degree cone bottom tank in black, for light-sensitive liquids
The Snyder Industries 5,000 gallon 15 degree cone bottom tank in black, part number 8050200N49, is a black high...