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 Enduraplas 6000 Gallon Black Cone Bottom Tank with Stand (SKU THC06000KB) is a stand-supported cone-bottom vessel built for chemical batching, dosing, and settling where you want the contents to...
The Enduraplas 6000 Gallon Green Cone Bottom Tank with Stand (SKU THC06000KG) is a full-drain vessel built for chemical batching and storage where you need the tank to empty toward a single low point...
The Snyder Industries 4400 Gallon Heavy Duty Cone Bottom Tank is a black, full-drain vessel molded in high density linear polyethylene (HDLPE) and rated to a 1.9 specific gravity, which is the...
The Snyder Industries 6000 Gallon 30 Degree Cone Bottom Tank (SKU SII-5280200N43) is a white polyethylene cone bottom tank rated for a 1.5 specific gravity, built for full-drain processing and...
The Snyder Industries 6000 Gallon Cone Bottom Tank (SKU 5280200N49) is a black polyethylene cone bottom tank built for full-drain chemical batching and process work, where the sloped floor sends...
The Snyder Industries 4400 Gallon XLPE Cone Bottom Tank is built for full-drain bulk chemical batching and metering. Molded in black crosslinked linear polyethylene (XLPE) with a 1.5 specific gravity...
The Norwesco 7500 Gallon 30 Degree Plastic Vertical Cone Bottom Tank is a full-drain processing vessel built for industrial chemical handling where you need every gallon out of the bottom.This...
The Snyder Industries 7400 Gallon 30 Degree Plastic Cone Bottom Tank (SKU SII-5320100N43) carries up to 92,574 lb of product at its 1.5 specific-gravity rating on a 142 x 142 inch footprint, and that...
The Enduraplas 10000 Gallon White Cone Bottom Tank is a 10,000-gallon, 1.9 specific-gravity cone bottom tank built in Converse, Texas for chemical service that needs full drainage and a high density...
The Enduraplas 10000 Gallon Black Cone Bottom Tank is a full-drain bulk vessel built for high-specific-gravity chemical service, rated to a specific gravity of 1.9. Molded in black polyethylene, this...
The Enduraplas 10000 Gallon Green Cone Bottom Tank is built for bulk chemical batching, mixing, and full-drain dispensing where sediment cannot be allowed to settle in the bottom of the vessel. This...
The 10000 Gallon 15 Degree Cone Bottom Tank in Black is a Norwesco polyethylene cone bottom tank rated to a 1.5 specific gravity, built for full-discharge handling of heavier-than-water solutions. It...