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  • Unrivaled Quality
    Precision Laser
    Hi Def Plasma Cutting
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  • Direct Shipping
    On Time Delivery
    Customer Pickup Available
  • Cost Effective
    Convert Weldments into Castings
    Save Time and Money
    See How You Can Save
  • Safety Gratings
    Grip Strut Safety Grating, Walkways, Flooring, Stair Treads and Ladder Rungs
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  • AISC Certified
    Recognized by the American Institute of Steel Construction in 2013, for quality standards for Steel Building Structures
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  • Nationally Recognized

    Featured on a nationally
    syndicated television series
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Over 140 Years

In the 143-year history of providing quality products & services, Sioux City Foundry has continued to evolve, advancing in all areas of steel fabrication, cast iron manufacturing, sheet metal fabrication, steel manufacturing and much more. In addition to providing quality products and services, we have added new capabilities to our Machining Center, including drill, bore, mill, cope and thread mill, used to manufacture metal products. Sioux City Foundry continues to work diligently to be one of the top foundries nationwide and your premiere One-Stop Metal Shop.


Community History

Our company has grown by tremendous strides since it was established in 1871, on the corner of Main and Seventh streets in Sioux City, Iowa. 'Foundry' describes only a small part of what we do now. We have evolved to become all things to the metals industry. We warehouse a variety of Stock Steel and process your order to meet your custom requirements. Our Reinforcing Steel department supplies high quality black and epoxy coated reinforcing steel for a variety of construction projects.


Steel Welding & Fabrication

Our Midwest location allows us to provide quality structural steel beams and metal fabrication to a wide range of customers. As one of the most versatile producers of metal fabricated products, we are able to provide high quality products, service and selection. We are located next to our own steel warehouse, which makes us an unbeatable combination when it comes to providing professional quality metal products and tremendous customer service.


Best in Class Castings

Of course, Sioux City Foundry wouldn't be complete without our Cast Iron Foundry. We work with both older casting patterns, as well as design new patterns, according to your unique requirements. We use a variety of molding methods to guarantee the perfect fit for your gray iron and ductile iron needs. Sioux City Foundry works with our customers to ensure best-in-class products, services, and results.


Sioux City Foundry handles all your metal needs, from iron castings to structural steel and welded metal jobs, black and epoxy coated rebar, and NEW stainless steel Wine Racks. Call 800-831-0874 today and make Sioux City Foundry your complete source for all your metal needs.



Ductile and gray iron foundry

Ductile and Gray Iron Casting Manufacturer

steel service center

Steel Warehouse offers a variety of Processing & Machining

Robotic Welding

Digitally Controlled Robotic Welding - Accuracy Ensured

Black & Epoxy Coated Rebar

Black Rebar & Epoxy Coated Rebar Supplier

structural fabrication

Quality Structural Steel & Sheet Metal Fabrication

Wine On the Wall

Stainless Steel Wine Racks - Premier Wine Storage Systems