Southern Bin Company - Grain system solutions that maximize productivity.

Farm/Commercial Bins

Progressive Innovations For Storing Grain On The Farm
Only grain systems with 4" roof rib panels. Tallest in the industry! Single piece roof panels on all farm/comm bins. Only company offering 66′ diameter farm/comm bins. Systems can store 64lb/bushel grains. 10 year warranty is standard on farm/comm bins.

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64 lb/bushel Bins
Roof panels on 42'-66' grain systems feature four inch ribs on each roof panel making them the tallest in the industry! Compared to roof ribs that are only 3 1/8" tall, 4" ribs are 40 percent stronger. Roofs are more resistant to high winds and larger snow loads keeping your investment safe during harsh weather conditions.

Single Piece Roof Panels
Sioux Steel Farm/Comm bins, up to 66′ in diameter, feature single stage, single piece roof panels. Roofs are easier to assemble. Construction crews no longer have to spend time constructing roof panel transitions. Fewer parts & easier construction result in less installation time.

Sidewalls Are Fully Stiffened
A bin which is fully stiffened, from the first ring at the base of the bin to the top, is capable of carrying high vertical grain loads. Our Farm/Comm bins can store grains weighing up to 64lbs/bushel. This is above the industry standard, allowing our bins to be utilized for years to come.

Stiffener Splicing
Stiffener splices ensure that the vertical loads are transferred properly between stiffener sections. Both an insert and two back plates are used at each stiffener splice location ensuring that bypassing does not occur. We utilize 7/16" hardware in all wall sheet seams and at all stiffener to wall sheet connections. 7/16" fasteners are 36% stronger than 3/8".


Aeration Systems - Access Doors - Walk-In Doors - Floors - Ladder & Cage systems - Daay Power Sweep - Stairs

Grain Monitoring, Side Draw Unloads, Grain Legs, Grain Loop Systems, Drag Conveyors, Continuous Flow Dyers, Stiring Machines, Grain Spreaders, Towers, Catwalks and Support Structures.


Farm/Comm bin capacities shown with air floor option. Bin volume calculations based upon ASAE S413.1; 28 degree angle of fill, 8% compaction & 769kg/m3 bulk density. Total height based upon standard 30" peak cap.

Capacities are estimates and are not guaranteed.

Sidewall Strength

64 lb/bushel Grain Weights
Sioux Steel farm bins are designed for grains weighing up to 64 lb/bushel. The industry standard is just 60 lb/bushel. Sioux Steel farm bins are designed for grain weights of the future.

51 lbs/ft3 Free Flowing Grains
Each bin is designed for free flowing grain densities up to 51 lbs/ft3 or 55 lbs/ft3 including compaction. Sioux farms bins easily handle typical corn densities of approximately 45 lbs/ft3.

4" Corrugation
4" corrugation on sheets reduce friction load on the sidewalls and allows grain to flow easily down bin wall with less resistance. Fewer sheets cover a wider area, lowering construction costs.

Galvanized Steel
Standard on all Sioux Steel grain systems, this coating on each 44" tall bin sheet and roof panels provide years of protection from harsh weather conditions and rust.

Bin Roofs

The strongest farm bin roof in the industry! Sioux Steel′s farm bin roofs feature peak load ratings up to 10,000 lbs. Manufactured in the upper Midwest, Sioux Steel farm storage grain systems protect grain from all weather conditions. These strong roofs stand up to northern snow loads and high winds, keeping grain fresh and in condition for years. Learn more about our roof features.

Access Points

You won′t have to wonder if you can make it through the man-way when you′re out in the elements with lots of layers of clothing on. Learn more about the most user-friendly man-way!

Solid, Tieless Walk-In Doors
Truly a walk-in door with no cross ties. Clear span opening allows anyone to walk in & out without having to crawl or unbolt any parts.

Bin Floors

Floor and Floor Supports
Designed to develop equal air pressure under the entire floor surface. Floor supports are available in 20 or 17 gauge. Made from galvanized steel formed with ten vertical ribs to support grain depths up to 37 feet at the eave. Floor planks are available in 20, 18 & 16 gauge.