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 10000 gallon 30 degree cone bottom tank, the largest cone in the line
The Norwesco 10000 gallon 30 degree cone bottom tank, part number 44103, is a white polyethylene tank 141 inches in diameter...
A 4,400 gallon natural white heavy duty cone bottom tank you can read the level on
Part number 5200000N42 is Snyder Industries' 4,400 gallon heavy duty cone bottom tank in natural white crosslinked...
A black 4,400 gallon heavy duty cone bottom tank for heavy liquids stored outdoors
Snyder Industries 5200000N48 holds 4,400 gallons in a black, heavy duty, crosslinked linear polyethylene (XLPE)...
Snyder 6000 gallon natural XLPE cone bottom tank, standard wall, low profile
Part number 5280200N40 is Snyder Industries' 6000 gallon cone bottom tank in natural white crosslinked linear...
Snyder 6000 gallon black XLPE cone bottom tank, standard 1.5 wall
Part number 5280200N46 is Snyder Industries' 6000 gallon cone bottom tank in black crosslinked linear polyethylene with the standard...
A 5,500 gallon black cone bottom tank for water, fertilizer and lighter chemicals
Snyder Industries part number 7040000N49 is a 5500 gallon cone bottom tank in black polyethylene with the standard...
A 5,500 gallon white cone bottom tank on a 90 inch footprint
Snyder part number 7040000N43 is a 5,500 gallon, 30 degree cone bottom tank in white polyethylene. It is 90 inches in diameter, 241...
A low, wide 6,000 gallon heavy duty cone bottom tank for dense liquids
Snyder Industries part number 5280200N51 is a 6000 gallon heavy duty cone bottom tank in black high density linear polyethylene...
A 6,000 gallon 30 degree cone bottom tank on a wide 142 inch footprint
Snyder part number 5280200N45 is a 6,000 gallon cone bottom tank in white high density linear polyethylene with a 30 degree...
The Enduraplas 6011 Gallon White Cone Bottom Tank with Stand (SKU THC06011KW) is built for full-drain batching and chemical storage where the vessel needs to empty completely and the contents stay...
The Enduraplas 6011 Gallon Black Cone Bottom Tank with Stand (SKU THC06011KB) is a full-drain, chemical-service vessel built for process work where the tank has to empty completely and hold...
The Enduraplas 6011 Gallon Green Cone Bottom Tank with Stand (SKU THC06011KG) is a full-drain polyethylene tank built for process and chemical storage where the vessel needs to empty completely.It...