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 10,000 Gallon Green Cone Bottom Tank with Stand (SKU THC10000KG) is a full-drain vessel built for continuous chemical and process service where you need every gallon to evacuate...
The Enduraplas THC10000KWH is a 10,000-gallon cone bottom tank riding on a steel stand, with a 15-degree cone floor engineered to drain solids and slurries toward a single bottom discharge. It...
A tall 6,500 gallon heavy duty cone bottom tank on a 90 inch footprint
Snyder Industries part number 7180000N51 is a 6500 gallon heavy duty cone bottom tank in black high density linear polyethylene...
A tall, narrow 6500 gallon heavy duty XLPE cone bottom tank in natural white
Snyder Industries part number 7180000N42 is a 6500 gallon cone bottom tank in natural white crosslinked linear...
A 6500 gallon black heavy duty cone bottom tank for dense liquids on a narrow pad
Snyder Industries part number 7180000N48 is a 6500 gallon cone bottom tank in black crosslinked linear polyethylene,...
A 6500 gallon 30 degree cone bottom tank rated for liquids up to 1.9 specific gravity
Snyder part number 7180000N45 is a 6500 gallon cone bottom tank in white polyethylene, 90 inches in diameter and...
An 11,500 gallon black cone bottom tank with the standard 1.5 wall
Snyder Industries part number 5340100N49 is Snyder's 11500 gallon cone bottom tank in black polyethylene with the standard wall:...
An 11,500 gallon 30 degree cone bottom tank, rated 1.5 specific gravity
Part number 5340100N43 is Snyder's 11500 gallon 30 degree cone bottom tank in white high density linear polyethylene. It is...
An 11500 gallon natural white XLPE cone bottom tank for bulk batching and settling
Snyder Industries part number 5340100N40 is an 11500 gallon cone bottom tank in natural white crosslinked linear...
An 11500 gallon black XLPE cone bottom tank for outdoor bulk storage that drains dry
Snyder Industries part number 5340100N46 holds 11500 gallons in black crosslinked linear polyethylene, with a...
A 13000 gallon black cone bottom tank, 142 inches across and 238 inches tall, for bulk liquids that must drain completely
Snyder part number 7490100N49 is a 13000 gallon cone bottom storage tank in...
A 13,000 gallon 30 degree cone bottom tank that empties itself completely
Snyder's 13,000 gallon cone bottom tank in white, part number 7490100N43, is a high density linear polyethylene tank 142...