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 8000 Gallon Green Cone Bottom Tank with Stand (SKU THC08000KG) is a full-drain vessel built for chemical batching, storage, and metering where you need every gallon to evacuate through...
The Enduraplas 8000 Gallon 15 Degree Plastic Cone Bottom Tank with Stand (SKU THC08000K) is a large-volume, full-drain vessel built for batching, mixing, and dispensing where the contents need to...
The Snyder Industries 5500 Gallon XLPE Heavy Duty Cone Bottom Tank is built for the chemistry that ordinary water-tank polyethylene cannot survive long term. Molded in crosslinked linear polyethylene...
The Snyder Industries 5500 Gallon Heavy Duty Cone Bottom Tank is built for the toughest concentrated-chemistry duty in industrial water treatment and process service.Molded in black Crosslinked...
The Snyder Industries 6500 Gallon Cone Bottom Tank (SKU 7180000N49) is a full-drain, black polyethylene cone bottom tank rated to 1.5 specific gravity, built for bulk chemical batching, mixing, and...
The Snyder Industries 6500 Gallon 30 Degree Plastic Cone Bottom Tank (SKU SII-7180000N43) is a 6,500-gallon white polyethylene cone tank built for full-drain batching, mixing, and chemical storage...
The Snyder Industries 6500 Gallon XLPE Cone Bottom Tank is a crosslinked linear polyethylene (XLPE) vessel rated to a 1.5 specific gravity, built for full-drain bulk chemical storage where solids...
The Snyder Industries 6500 Gallon XLPE Cone Bottom Tank is a 6,500-gallon crosslinked linear polyethylene (XLPE) vessel built for bulk chemical service that demands full-drain cone discharge and a...
The Enduraplas 10000 Gallon White Cone Bottom Tank with Stand (SKU THC10000KW) is a cone-bottom vessel built for gravity draw-down in continuous chemical storage and batch processing. Molded from...
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...
The Enduraplas 10,000 Gallon Green Cone Bottom Tank with Stand (SKU THC10000KG) is a full-drain vessel built for continuous chemical and process service where you need every gallon to evacuate...
The Enduraplas THC10000KWH is a 10,400-gallon cone bottom tank riding on a steel stand, with a 15-degree cone floor engineered to drain solids and slurries toward a single bottom discharge. It...