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...
A 4,400 gallon heavy duty black cone bottom tank rated to 1.9
Snyder Industries part number 5200000N51 is a 4400 gallon heavy duty cone bottom tank in black high density linear polyethylene. It...
A 4,400 gallon 30 degree cone bottom tank, 200 inches tall, rated 1.9
Snyder part number 5200000N45 is a 4,400 gallon cone bottom tank in white polyethylene with a 30 degree cone. It is 90 inches in...
A 6,000 gallon black cone bottom tank built low for tight headroom
Snyder Industries part number 5280200N49 is a 6000 gallon cone bottom tank in black polyethylene with the standard wall. It is 142...
A 6,000 gallon white cone bottom tank for water and lighter liquids
Snyder part number 5280200N43 is a 6,000 gallon, 30 degree cone bottom tank in white polyethylene. It is 142 inches in diameter,...
A 4,400 gallon black cone bottom tank in the standard 1.5 wall
The Snyder Industries 5200000N46 is a 4,400 gallon black cone bottom tank in crosslinked linear polyethylene (XLPE), 90 inches in...
A 4,400 gallon 30 degree cone bottom tank for complete drain-down batching
The Snyder Industries 4,400 gallon 30 degree cone bottom tank, part number 5200000N40, is a white cross-linked linear...
A 7500 gallon 30 degree cone bottom tank in light blue, rated for heavy liquids
Part number 40409 is Norwesco's 7500 gallon cone bottom tank with a 30 degree cone, moulded in light blue polyethylene...
The 10000 Gallon 15 Degree Cone Bottom Tank 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 measures...
A 7400 gallon black cone bottom tank for water, fertilizer and liquids up to 1.5 specific gravity
Snyder part number 5320100N49 is a 7400 gallon cone bottom tank in black polyethylene, made at...
A 7,400 gallon 30 degree cone bottom tank for bulk batching and load-out
The Snyder Industries 7,400 gallon 30 degree cone bottom tank, part number 5320100N43, is a white polyethylene process vessel...