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 7500 Gallon 30 Degree Cone Bottom Tank in White is a closed-top, full-drain vessel built for bulk chemical storage where you need the tank to empty completely. Molded in polyethylene...
The Snyder Industries 4100 Gallon 45 Degree Plastic Cone Bottom Tank (SKU SII-5180000N45) is a white, 1.9 specific-gravity polyethylene cone bottom tank built for full-drain chemical and process...
The Norwesco 7500 Gallon 30 Degree Cone Bottom Tank (SKU N-40551) is built for full-drain chemical and process service where the contents need to evacuate completely under gravity.Molded in white...
The Snyder Industries 4100 Gallon Heavy Duty Cone Bottom Tank (SKU 5180000N51) is built for full-drain bulk chemical storage and batch processing where you need every gallon to evacuate through the...
The Snyder Industries 4100 Gallon XLPE Heavy Duty Cone Bottom Tank is built for full-drain chemical service: a 1.9 specific-gravity rated crosslinked polyethylene (XLPE) shell measuring 90 inches...
The Snyder Industries 4100 Gallon XLPE Heavy Duty Cone Bottom Tank is a black crosslinked linear polyethylene (XLPE) tank built for heavy chemical duty, carrying a 1.9 specific gravity rating - high...
The Enduraplas 8000 Gallon White Cone Bottom Tank is a full-drainage polyethylene vessel built for bulk industrial and water-treatment chemical service, rated to 1.9 specific gravity so it carries...
The Enduraplas 8000 Gallon Black Cone Bottom Tank is a full-drain vessel for bulk chemical storage, metering, and dosing - including diesel exhaust fluid (DEF) at 32.5% - rated to a 1.9 specific...
The Enduraplas 8000 Gallon Green Cone Bottom Tank is a full-drain polyethylene vessel built for bulk chemical service, rated to a 1.9 specific gravity so it carries dense liquids that would...
The 4400 Gallon 30 Degree Plastic Cone Bottom Tank from Snyder Industries is a 90-inch-square-footprint, 200-inch-tall poly process tank built for full-drain chemical handling. Molded in white...
The Snyder Industries 4,400 Gallon XLPE 30-degree cone bottom tank is a full-drain chemical and process vessel rated to 1.5 specific gravity, molded in white cross-linked polyethylene (XLPE).It...
The Enduraplas 6000 Gallon White Cone Bottom Tank with Stand (SKU THC06000KW) is a full-drain vessel built for chemical batching, mixing, and metering where you need the tank to empty completely. It...