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 Norwesco 1720 Gallon 15 Degree Cone Bottom Tank is a closed-top vessel molded from High Density Linear Polyethylene (HDLPE), carrying a 1.9 specific gravity rating that puts it in genuine...
The Enduraplas 1200 Gallon White Cone Bottom Tank is built for full-drain chemical batching, mixing, and dosing where you need every drop to evacuate through the bottom.The cone-bottom geometry...
The Enduraplas 1200 Gallon Black Cone Bottom Tank (SKU THC01200B) is built for full-drain bulk chemical service, with a 1.9 specific gravity rating that puts it among the heaviest-duty cone-bottom...
The Enduraplas 1200 Gallon Green Cone Bottom Tank (SKU THC01200G) is a polyethylene cone bottom tank built for full-drain bulk chemical service.It holds 1,200 gallons in a 90 in x 90 in footprint and...
The Chem-Tainer TC4246CB is a 250-gallon open top tank with a 20-degree cone bottom, molded in polypropylene for chemical service that needs full drainage. As a cone tank, the sloped floor discharges...
The Snyder Industries 120 Gallon HDLPE Chemical Feed Station Tank (SII-5700104CFWS45) pairs a 120-gallon white high density linear polyethylene tank with an integrated stand, giving day-tank and...
The Snyder Industries 1000 Gallon 30 Degree Plastic Cone Bottom Tank is a white polyethylene cone tank built for full-drain chemical and process service, rated to a 1.9 specific gravity so it carries...
The Snyder Industries 1000 Gallon Heavy Duty Cone Bottom Tank (SKU 1890000N51) is built for full-drain chemical batching, mixing, and dosing where you can't leave product sitting in the bottom. It's...
The Snyder Industries 1250 Gallon Heavy Duty Cone Bottom Tank is a 1.9 specific-gravity cone-bottom vessel built for full-drain chemical service. Molded in natural white polyethylene, the 1250-gallon...
The Norwesco 1500 Gallon 45 Degree Cone Bottom Tank (N-43854) is a white polyethylene tank built for full-drain chemical processing, batching, and metering.With a 1.5 specific gravity rating, it...
The Enduraplas 1600 Gallon White Cone Bottom Tank is a full-drain vessel built for industrial chemical batching, mixing, and dosing where you need every gallon to gravity-feed out the bottom. It...
The Enduraplas 1600 Gallon Black Cone Bottom Tank is a 1,600-gallon polyethylene cone-bottom vessel built for full-drain chemical and process service, rated to a 1.9 specific gravity.The black resin...