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 1600 Gallon Heavy Duty Cone Bottom Tank is a full-drain vessel built for chemical processing, batching, and complete-discharge applications where you do not want product...
The Snyder Industries 325 Gallon 30 Degree Cone Bottom Tank (SII-1560500N45) is a closed-top HDPE cone tank molded in white and delivered on a matched poly stand. The full 30-degree cone lets thick...
The 325 Gallon Heavy Duty Cone Bottom Tank with Poly Stand (Snyder SKU 1560500N51) is built for full-drain chemical batching, where you need every gallon to move to the outlet without manual scraping...
The Snyder Industries 1250 Gallon XLPE Heavy Duty Cone Bottom Tank (SKU 8310000N48) is a bare cone bottom shell built for full-drain chemical service. It molds from crosslinked linear polyethylene...
The Enduraplas 550 Gallon 15 Degree Plastic Vertical Cone Bottom Tank with Stand (SKU THC00550K) is built for processes that need to drain completely — mixing, batching, settling, and chemical dosing...
The Norwesco 2500 Gallon 30 Degree HDPE Cone Bottom Tank is a 96-inch diameter, 105-inch tall blue tank built for full-drain chemical and process service where you cannot leave product sitting in the...
The Enduraplas 870 Gallon White Cone Bottom Tank with Stand (SKU THC00870KW) is a full-cone vessel built for batching, dosing, and settling where you need contents to drain toward the outlet rather...
The Enduraplas 870 Gallon Black Cone Bottom Tank with Stand (SKU THC00870KB) is built for full-drain chemical storage and batching where you need the tank to empty completely through the bottom.It...
The Enduraplas 870 Gallon Green Cone Bottom Tank with Stand (SKU THC00870KG) is a full-drain vessel built for batch chemical processes where you empty the tank completely between runs. The green...
The Norwesco 3000 Gallon 30 Degree Cone Bottom Tank (N-40170) is a 1.5 specific-gravity polyethylene tank built for batching, mixing, and full-drain dosing of moderately heavy liquids.It runs...
The Snyder Industries 1400 Gallon XLPE Heavy Duty Cone Bottom Tank is a crosslinked linear polyethylene cone tank built for aggressive chemical-feed and storage duty where a higher specific-gravity...
The Snyder Industries 1400 Gallon XLPE Heavy Duty Cone Bottom Tank is a crosslinked polyethylene cone tank built for aggressive chemical service, rated to 1.9 specific gravity so it carries dense,...