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 Snyder Industries 6500 Gallon Heavy Duty Cone Bottom Tank (SKU 7180000N51) is a 1.9 specific-gravity cone tank molded in black High Density Linear Polyethylene for full-drainage bulk chemical...
The Snyder Industries 6500 Gallon XLPE Heavy Duty Cone Bottom Tank (SKU 7180000N42) is built for full-drain chemical batching and process storage where you need everything out of the tank between...
The Snyder Industries 6500 Gallon XLPE Heavy Duty Cone Bottom Tank is a crosslinked-polyethylene (XLPE) cone bottom tank built for full-drain chemical service. It carries a 1.9 specific gravity...
The Snyder Industries 6500 Gallon 30 Degree Plastic Cone Bottom Tank (SKU SII-7180000N45) is a full-drain industrial vessel built for chemical service. Molded in white polyethylene by Snyder...
The Snyder Industries 275 Gallon 15 Degree Plastic Cone Bottom Tank is a closed-top, full-drain vessel molded from white polyethylene and rated to 1.9 specific gravity. The 15-degree cone bottom...
The Snyder Industries 11500 Gallon 30 Degree Cone Bottom Tank (SKU SII-5340100N43) is built for concentrated chemical service that fully drains.Molded in white High Density Linear Polyethylene with a...
The Snyder Industries 11500 Gallon Cone Bottom Tank (SKU 5340100N49) is a full-drain black polyethylene cone-bottom tank built for bulk chemical batching, blending, and complete-discharge service...
The Snyder Industries 11500 Gallon XLPE Cone Bottom Tank is a crosslinked linear polyethylene vessel built for full-drain chemical service, holding 11,500 gallons in a 142-inch by 142-inch footprint...
The Snyder Industries 11500 Gallon XLPE Cone Bottom Tank is built for full-drain bulk chemical storage where the contents need to evacuate completely and the liquid is heavier than water. It is...
The Snyder Industries 13000 Gallon 30 Degree Cone Bottom Tank (SKU SII-7490100N43) is a white vessel built from High Density Linear Polyethylene and rated to a 1.9 specific gravity - the highest wall...
The Snyder Industries 13000 Gallon Cone Bottom Tank is a full-drain, black polyethylene vessel built for bulk chemical batching, blending, and storage where you need every gallon out the bottom.It...
The Snyder Industries 11500 Gallon 30 Degree HDPE Cone Bottom Tank is a Lincoln, Nebraska-built polyethylene cone tank engineered for full-drain chemical processing and bulk storage. Standing 214.5"...