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 5000 Gallon White Cone Bottom Tank (SKU THC05000W) is a 5,000-gallon polyethylene cone-bottom vessel built for full-drain chemical and process service. It stands 166 inches tall on a...
The Enduraplas 5000 Gallon Black Cone Bottom Tank (SKU THC05000B) is built for full-drain bulk chemical service where you cannot leave product sitting on the floor of the tank. Molded in black...
The Enduraplas 5000 Gallon Green Cone Bottom Tank (SKU THC05000G) is a 5,000-gallon polyethylene cone bottom built for full-drain bulk chemical service.It stands 166 inches tall on a 110 x 110 inch...
The Snyder Industries 5000 Gallon 15 Degree Cone Bottom Tank (SKU SII-8050200N45) is a closed-top, full-drain cone bottom tank molded in white polyethylene and rated to 1.5 specific gravity, which...
The Snyder Industries 5000 Gallon 15 Degree Cone Bottom Tank (SKU SII-8050200N49) is a closed-top, black cone bottom tank molded in High Density Linear Polyethylene with a 1.5 specific gravity...
The Enduraplas 6011 Gallon White Cone Bottom Tank is built for full-drain chemical batching and storage where you need every gallon to evacuate through the cone. This is a large-format cone bottom...
The Enduraplas 6011 Gallon Black Cone Bottom Tank (SKU THC06011B) is a bulk-volume polyethylene cone bottom tank built for full-drain chemical and process service, where emptying clean matters as...
The Enduraplas 6011 Gallon Green Cone Bottom Tank (SKU THC06011G) is built for bulk chemical service where you need full drainage and a heavy specific-gravity rating.This is a green polyethylene cone...
The Snyder Industries 3600 Gallon 15 Degree XLPE Cone Bottom Tank is engineered for full-drain chemical service: a 1.9 specific-gravity rated, cross-linked polyethylene cone tank that empties...
The Snyder Industries 3600 Gallon Black XLPE Heavy Duty Cone Bottom Tank (SKU 8050000N48) is a crosslinked polyethylene cone bottom tank built for full-drain chemical service at a 1.9 specific...
The 6011 Gallon 15 Degree Cone Bottom Tank from Enduraplas is a large-volume process vessel built for full-drain applications where product needs to flow completely out the bottom. It holds 6,011...
The 3900 Gallon 30 Degree Plastic Cone Bottom Tank from Snyder Industries is a 3,900-gallon white polyethylene cone-bottom tank rated to 1.5 specific gravity, built for full-drain handling of process...