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 Chemtainer 55 Gallon 20 Degree Vertical Cone Bottom Tank (SKU TC2247BP) pairs a 55-gallon closed-top polyethylene cone tank with a matching poly stand, so the 20-degree cone bottom drains fully...
The Chemtainer TC3198JP is a 300-gallon, 20-degree closed-top cone bottom tank sold as a package with its matching poly stand, molded in natural white polyethylene, rated to a 1.5 specific gravity,...
The Snyder Industries 500 Gallon Heavy Duty Cone Bottom Tank (SKU 6190000N51) is built for full-drain chemical and industrial service where gravity discharge and a high specific-gravity rating matter...
The Chemtainer 125 Gallon 15 Degree Vertical Cone Bottom Tank (SKU TC4235AP) is a closed-top polyethylene cone-bottom tank on a matching poly stand, built for batching and full-drain dispensing where...
The Norwesco 1000 Gallon 45 Degree Cone Bottom Tank (SKU N-43852) is a steep-cone polyethylene tank built for full-drain chemical and process service where you need every gallon to evacuate through...
The Norwesco 1050 Gallon 20 Degree Cone Bottom Tank (SKU N-40356) is a closed-top polyethylene cone bottom tank built for processes that need full drainage and complete settled-solids removal.It...
The Norwesco 1720 Gallon 15 Degree Cone Bottom Tank is a closed-top polyethylene cone bottom tank built for bulk chemical and process work where you need to drain the vessel completely.The 15-degree...
The 225 Gallon 30 Degree Plastic Vertical Cone Bottom Tank with Stand from Snyder Industries is a full-drain vessel built for batching, mixing, and metering applications where you need every last...
The Norwesco 500 Gallon 30 Degree Cone Bottom Tank with Poly Stand (SKU N-40289) is built for controlled, full-drain dispensing of liquids and process chemicals.Molded in white polyethylene with a 1...
The Norwesco 1000 Gallon 45 Degree Cone Bottom Tank (SKU N-44640) is a 1000-gallon polyethylene cone bottom tank built for complete drainage.The steep 45-degree cone discharges thick slurries,...
The Norwesco 1720 Gallon 15 Degree Cone Bottom Tank (SKU N-44337) is a 1.5 specific gravity polyethylene cone-bottom tank built for chemical batching, mixing, and full-drain processing where you need...
The Norwesco 1320 Gallon 15 Degree HDPE Vertical Cone Bottom Tank is a chemical-service vessel molded from high density linear polyethylene (HDLPE) and rated to a 1.9 specific gravity. The 15-degree...