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 black 7400 gallon heavy duty cone bottom tank for dense, light-sensitive bulk liquids
Snyder part number 5320100N51 is the black version of Snyder's 7400 gallon heavy duty cone bottom tank. It is...
Snyder 5500 gallon natural XLPE cone bottom tank, standard wall, 90 inches across
Part number 7040000N40 is Snyder Industries' 5500 gallon cone bottom tank in natural white crosslinked linear...
A 5,500 gallon black cone bottom tank for fertilizer, brine and other liquids up to 1.5 specific gravity
The Snyder Industries 7040000N46 is the standard wall version of Snyder's 5,500 gallon black...
A wide, low 6000 gallon heavy duty XLPE cone bottom tank in natural white
Snyder Industries part number 5280200N42 is a 6000 gallon cone bottom tank in natural white crosslinked linear polyethylene...
A 6000 gallon black heavy duty cone bottom tank that stays under 136 inches tall
Snyder Industries part number 5280200N48 is a 6000 gallon cone bottom tank in black crosslinked linear polyethylene,...
A 5500 gallon heavy duty XLPE cone bottom tank in natural white for liquids up to 1.9 specific gravity
Snyder Industries part number 7040000N42 is a 5500 gallon cone bottom tank in natural white...
A 5,500 gallon black heavy duty cone bottom tank for dense liquids that have to drain completely
Snyder Industries part number 7040000N48 is a 5,500 gallon cone bottom tank moulded in crosslinked...
A 6,500 gallon black cone bottom tank that stands tall on a small pad
Snyder Industries part number 7180000N49 is a 6500 gallon cone bottom tank in black polyethylene with Snyder's standard wall. It...
A 6500 gallon 30 degree cone bottom tank, 90 inches across and 273 inches tall
Snyder part number 7180000N43 is a 6500 gallon cone bottom tank in white polyethylene, 90 inches in diameter and 273...
Snyder 6500 gallon natural XLPE cone bottom tank, standard wall, on a 90 inch footprint
Part number 7180000N40 is Snyder Industries' 6500 gallon cone bottom tank in natural white crosslinked linear...
Snyder 6500 gallon black XLPE cone bottom tank, standard 1.5 wall
Part number 7180000N46 is Snyder Industries' 6500 gallon cone bottom tank in black crosslinked linear polyethylene, standard wall,...
The Enduraplas 10,000 Gallon Black Cone Bottom Tank with Stand (SKU THC10000KB) pairs a 144" diameter polyethylene tank with an integrated stand and a cone-bottom drain geometry for complete...