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 Chemtainer TC3048AP is a 100-gallon open-top cone-bottom tank with a 20-degree cone and a matching poly stand, built for chemical batching, mixing, and full-drain metering where you need every...
The Chem-Tainer TC3166JP is a 150-gallon closed-top cone bottom tank paired with a matched poly stand, molded in natural white polyethylene with a 1.9 specific gravity rating - the top density tier...
The Norwesco 300 Gallon 30 Degree Cone Bottom Tank (SKU N-62343) is built for processes that need to drain completely - the 30-degree cone bottom and matching black poly stand let solids and liquid...
The 200 Gallon Chem-Tainer Cone Bottom Tank with Poly Stand (SKU TC3177JP) is a closed-top, full-drain vessel built for chemical batching, mixing, and metered dispensing where you need the tank to...
The Norwesco 1020 Gallon 15 Degree Cone Bottom Tank (N-44341) is a White polyethylene cone bottom tank built for full-drain chemical service. With a 1020 gallon rated capacity, an SG 1.5...
The Enduraplas 870 gallon 15-degree cone bottom tank gives you a fully draining black polyethylene vessel built for batch chemical work where you need every drop to flow toward the outlet. The...
The Enduraplas 870 Gallon 15 Degree Plastic Vertical Cone Bottom Tank with Stand ships as a complete elevated cone-bottom system, standing 95 inches tall on a 60 x 60 inch footprint. The 15-degree...
The Chem-Tainer 350 Gallon 20 Degree Open Top Cone Bottom Tank (SKU TC4260CA) is a polyethylene vertical cone-bottom tank built for batching, settling, and full-drain dispensing of process liquids.It...
The Enduraplas 870 Gallon White Cone Bottom Tank (SKU THC00870W) is a 1.9 specific-gravity cone bottom tank built for full-drain chemical and process service. It holds 870 gallons in a 60-inch by...
The Enduraplas 870 Gallon Black Cone Bottom Tank is built for operations that need to fully drain viscous or settling chemical batches, with a cone geometry that empties to the outlet instead of...
The Enduraplas 870 Gallon Green Cone Bottom Tank (SKU THC00870G) is built for full-drain bulk chemical service where you cannot afford settled solids or a heel left in the tank.The cone-shaped bottom...
The 1100 Gallon 15 Degree Plastic Cone Bottom Tank without Stand is an Enduraplas cone-bottom vessel built for batching, mixing, and full-drain dispensing where you want the tank to empty completely...