Sioux Steel, Family owned since 1918

Sioux Steel Company manufactures grain bins, bunker walls, buildings, livestock equipment and garden beds right here in the heart of America! We're also proud to manufacture the safest sweep in the industry...the Daay Bin Paddle Sweep!

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Grain Storage

We are proud to manufacture innovative solutions that store and protect the world’s grain supply. From farm bins to complete commercial grain systems, we offer a complete solution for your next project.

Koyker Manufacturing

Koyker Manufacturing Inc., a division of Sioux Steel Company, is known for manufacturing high quality front end loaders, FlexStor grain bagging equipment and attachments for your tractor. Located in Lennox, SD, just 20 miles south of Sioux Falls, Koyker Manufacturing Inc. is proud to engineer and manufacture innovative products for your operation that offer the latest in design and efficiency.

Paddle Sweeps

The Safest Sweeps In The Industry! Sioux Steel proudly manufactures a variety of sweeps using flexible rubber paddles instead of dangerous augers. We are proud to be making farms and commercial sites across the world safer than they have ever been!

Pro·Tec Buildings

Pro•Tec Buildings provide natural lighting and superior ventilation, while offering unbeatable strength and durability. Available in open span widths up to 200 feet, they are engineered to meet the needs of both small and large operations.

Livestock Equipment

No other product can match Sioux Steel’s quality and durability, while offering the most common sense solutions for livestock equipment.

Custom Products

At Sioux Steel Company, we pride ourselves on our ability to create custom products. Here are just a few that we have created in the last year.

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Use our dealer locator to find a local Sioux Steel dealer in the United States and Canada.

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Sioux Steel, Family owned since 1918

Our Products