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 225 Gallon Heavy Duty Cone Bottom Tank with Poly Stand (SKU 1560400N51) is built for processors who need full drainage and the chemical headroom to run aggressive solutions.Molded in black...
The Snyder Industries 500 Gallon XLPE Heavy Duty Cone Bottom Tank is built for chemical-service duty where lighter polyethylene tanks fall short.Molded in crosslinked linear polyethylene (XLPE) with...
The Snyder Industries 500 Gallon XLPE Heavy Duty Cone Bottom Tank is built for aggressive chemical-service duty: a crosslinked linear polyethylene (XLPE) tank rated to 1.9 specific gravity, in black,...
The Chem-Tainer 500 Gallon Heavy Duty Cone Bottom Tank (SKU TC6568JA) is built for full-drain chemical and process service where you cannot leave a residual heel sitting in the bottom. It holds a...
The Enduraplas 1350 Gallon White Cone Bottom Tank is a Neche, North Dakota-built polyethylene cone-bottom vessel rated to specific gravity 1.9, which makes it one of the few stock cone tanks...
The Enduraplas 1550 Gallon White Cone Bottom Tank is a 1,550-gallon polyethylene vessel built for full-drain chemical and process service, where the cone discharge clears settled solids and lets the...
The Enduraplas 1350 Gallon Black Cone Bottom Tank is built for full-drain bulk chemical service, with a 1.9 specific gravity rating that makes it the heaviest-duty SG option in this cone bottom...
The Enduraplas 1550 Gallon Black Cone Bottom Tank is built for full-drain bulk chemical service.At 85 inches wide and 87 inches tall on an 85.0 x 85.0 footprint, this cone bottom tank carries a 1.9...
The Enduraplas 1350 Gallon Green Cone Bottom Tank is a polyethylene cone bottom tank built for full-drain bulk chemical service, and its 1.9 specific gravity rating is the top SG tier in this...
The Enduraplas 1550 Gallon Green Cone Bottom Tank (SKU THC01550G) is built for full-drain bulk chemical service where you cannot leave product sitting in the flat bottom of a closed-top tank. Molded...
The Norwesco 1600 Gallon 30 Degree Cone Bottom Tank (N-40817) is a polyethylene cone bottom tank built for full-drain process and chemical-feed service where you cannot leave product sitting in the...
The Norwesco 550 Gallon 20 Degree Cone Bottom Tank (SKU N-44649) is a closed-top polyethylene vessel that drains completely through its 20-degree cone, mounted on a matching poly stand for full...