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Belding Flat Bottom Tank

Flat Bottom tanks are the most common used tanks in the industry. All Flat Bottoms are designed in accordance with ASTM D-3299 or D-4097 standards. They are the most cost effective way to store product. The tank flat bottom requires a flat surface to give full support.


Tank Top

Closed Dome Top - This is the most frequently requested top style. The ASME Flanged & Dished design gives it the most strength without adding thickness. Each domed top comes standard with a top manhole with loose cover.
Closed Flat Top - A fixed, non-removable, flat surface. If head space is at a premium, if agitator rails are a requirement or flat walking surface is required, the Closed Flat Top may be the best choice.

Open Top with 90° Top Flanged Rim - When a Flat Cover, agitator rails or full access to the tank is required, the Open Top with 90° Top Flanged Rim option is the best choice.

Open Top with Type II Top Rim - When an open top will work and a Flat Cover and agitator rails are not required, this offers the most cost effective Flat Bottom tank design available.

Industry Standards

ASTM D-3299
ASTM D-4097

Tank Accessories (Optional)

Bolts & Gasket for Top Manholes
Hinged Covers for Top & Side Manholes

Flat Covers for Open Top Tanks
  • One Piece
  • Two Piece Hinged
  • Three Piece Hinged
1 in Clear PVC Sight Tube Assembly

Tank Top Handrail for Closed Top Tanks
  • Carbon Steel Primed
  • Carbon Steel Painted
  • FRP “Post Style”
  • FRP “Skirt Style”
  • Intermediate for Ladders Longer than 30 ft
  • Tank to Tank
  • Tank Top Work


Flat Cover for Open Top (1/2/3 pc.)
Integral FLAT Top Head


Diameters 72 in and larger are Filament Wound per ASTM D-3299
Diameters smaller than 72 in are Contact Molded per ASTM D-4097

Heavy powder coated carbon steel lifting lugs, as required for handling.


·  Belding Flat Bottom Tanks 2

·  Model C-CFV Belding Flat Bottom Tanks

·  Model C-OFV Belding Flat Bottom Tanks

·  Closed Dome Top

·  Closed Flat Top

·  Open Top with 90° Top Flanged Rim

·  Open Top with Type II Top Rim


Belding Flat Bottoms Tanks - Capacity Chart
(PDF, 69KB)