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 2500 Gallon Cone Bottom Tank is a black polyethylene cone-bottom vessel rated to a 1.5 specific gravity, built so the entire batch drains to the cone apex with no flat floor to...
The Norwesco 1600 Gallon 30 Degree Cone Bottom Tank (SKU N-40814) is a closed-top HDLPE tank that drops into a matching black poly stand, so the full 30-degree cone drains toward a single low point...
The Norwesco 1600 Gallon 30 Degree Cone Bottom Tank (SKU 40814) is a closed-top HDLPE cone-bottom vessel that drains completely through its 30-degree cone, built for batching, mixing, and...
The Norwesco 3000 Gallon 15 Degree HDPE Cone Bottom Tank in Blue is a full-drain process vessel built for chemical service. Molded from high density linear polyethylene with a 1.9 specific gravity...
The Snyder Industries 80 cubic foot 45-degree cone bottom dry hopper bin (SII-6370719N95402) is a closed-top, 600-gallon vessel molded from high-density linear polyethylene with a 1.5 specific...
The 275 Gallon XLPE Chemical Feed Station Tank with Stand from Snyder Industries pairs a cross-linked polyethylene tank with an integrated stand, so you can gravity-feed or draw from a raised outlet...
The Norwesco 1600 Gallon 30 Degree Cone Bottom Tank with Poly Stand is a closed-top HDPE cone tank built for chemical batching, mixing, and full-drain dispensing where you need every gallon to...
The Enduraplas 1600 Gallon 30 Degree Cone Bottom Tank with Poly Stand (SKU 40815) is a white HDPE tank built for full-drain batching, mixing, and dosing where the vessel has to empty completely...
The Enduraplas 2000 Gallon PP Open Top Cone Bottom Tank is a polypropylene bulk vessel built for batching, mixing, and full-drain chemical service where the entire working volume needs to empty...
The Enduraplas 1600 Gallon 15 Degree Vertical Cone Bottom Tank with Stand (SKU EP-THC01600K) is a closed-top polyethylene tank built for full-drain chemical and process service.It holds 1,600 gallons...
The Enduraplas 1600 Gallon 15 Degree Plastic Vertical Cone Bottom Tank with Stand is built for process work where you need the tank to drain completely - the 15-degree cone bottom keeps solids and...
The Snyder Industries 1600 Gallon XLPE Heavy Duty Cone Bottom Tank is built for storing aggressive chemistry that ordinary water tanks cannot hold.Molded in natural white crosslinked linear...