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 2000 gallon heavy duty cone bottom tank, rated 1.9 specific gravity, for chemical feed and dense process liquids
Snyder part number 5070000N51 is a 2000 gallon heavy duty cone bottom tank in black...
A 2,000 gallon 30 degree cone bottom tank rated for liquids up to 1.9
Snyder part number 5070000N45 is a 2,000 gallon cone bottom tank in white polyethylene with a 30 degree cone. It is 90 inches in...
A 2500 gallon 30 degree cone bottom tank that arrives on its own poly stand
The Norwesco 2500 gallon 30 degree cone bottom tank with poly stand, part number 40672, is the tank and a polyethylene...
The Chem-Tainer 350 Gallon 20-degree cone bottom tank (SKU TC4260CB) is built for operations that need every gallon to drain - chemical batching, settling, and processes where solids and residual...
A 2,000 gallon black heavy duty cone bottom tank for liquids up to 1.9
Snyder Industries part number 5070000N48 is the heavy duty, black version of the 2,000 gallon 5070000 cone. It is moulded in...
A 2,000 gallon cross linked cone bottom tank with a 30 degree cone, rated 1.9
The Snyder Industries 2000 gallon 30 degree XLPE cone bottom tank, part number 5070000N42, is a white cross linked...
A 3600 gallon Snyder cone bottom tank in standard polyethylene
The Snyder Industries 3600 gallon cone bottom tank, part number 8050000N43, is a natural white polyethylene vessel 102 inches in...
A 3600 gallon black cone bottom tank, 102 inches across, for water and liquids up to 1.5 specific gravity
Snyder part number 8050000N49 is a 3600 gallon cone bottom tank in black polyethylene, 102...
The Chem-Tainer 750 Gallon 15 Degree Plastic Vertical Cone Bottom Tank (SKU TC6258CA) is an open-top, cone-bottom polyethylene tank built for full-drain chemical and process service where a...
A 3000 gallon black cone bottom tank and poly stand for full drain bulk storage
The Norwesco 3000 gallon cone bottom tank and poly stand in black, part number 44951, is a polyethylene cone bottom...
The Chem-Tainer 500 Gallon 20 Degree Polypropylene Vertical Open Top Cone Bottom Tank is built for process work where you need to drain down and handle slurries or settling solids.Molded from...
A 2,600 gallon black cone bottom tank for liquids that settle
Snyder Industries part number 5100000N49 is a 2600 gallon cone bottom tank in black polyethylene with the standard wall. It is 90 inches...