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 7400 Gallon Cone Bottom Tank from Snyder Industries is a full-drain, high-capacity vessel built for bulk chemical service where you need every gallon to empty under gravity.It stands 160 inches...
The Norwesco 10000 Gallon 30 Degree Cone Bottom Tank (SKU N-44103) is built for full-drain chemical service where you cannot leave product sitting in the bottom. This is a 10,000-gallon polyethylene...
The Snyder Industries 4400 Gallon XLPE Heavy Duty Cone Bottom Tank is a crosslinked-polyethylene cone tank built for full-drain chemical and process duty. It holds 4,400 gallons, measures 90 inches...
The Snyder Industries 4400 Gallon XLPE Heavy Duty Cone Bottom Tank is a 4,400-gallon crosslinked linear polyethylene (XLPE) vessel rated to 1.9 specific gravity, built for dense, aggressive chemistry...
The 5500 Gallon 30 Degree Plastic Cone Bottom Tank from Snyder Industries is a 5,500-gallon white polyethylene cone bottom tank rated to a 1.5 specific gravity, standing 240.5 inches tall on a 90 x...
The 6000 Gallon 30 Degree HDPE Cone Bottom Tank from Snyder Industries is a White, high-density linear polyethylene (HDLPE) vessel built for full-drain chemical service, carrying a 1.9 specific...
The Snyder Industries 6000 Gallon XLPE Cone Bottom Tank is a 6,000-gallon crosslinked linear polyethylene (XLPE) vessel built for sustained chemical service, rated to 1.5 specific gravity.It stands...
The Snyder Industries 6000 Gallon XLPE Cone Bottom Tank is molded in crosslinked linear polyethylene (XLPE) rated to 1.5 specific gravity, so it carries heavier-than-water chemistry that a standard 1...
The Snyder Industries 5500 Gallon Black Cone Bottom Tank is a 1.5 specific-gravity vessel built for full-drain chemical batching, mixing, and dosing where you need the cone to empty completely...
The Snyder Industries 6000 Gallon Heavy Duty Cone Bottom Tank is a 1.9 specific-gravity vessel built for full-strength industrial chemical service - the kind of duty that destroys a standard 1.9 SG...
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...