Steel Factory Mfg Metal Buildings Steel Building Kits

Pre-fabricated American made Steel Buildings, Kits, and Metal Structures. 

Residential Buildings
RV Shelters
Custom Homes

Commercial Buildings
Auto Body Shops
Airplane Hangars
Storage Buildings
Retail Structures

Agricultural Buildings
Pole Barns
Hay Storage
Grain Storage
Farm Equipment Storage
Livestock Shelters

Recreational Steel Buildings
RV Storage
Sports Gymnasiums
Riding Arenas
Horse Barns

Military Buildings
Vehicle Storage

We are registered with the Central Contractor Registration

Steel Factory Mfg - Building Construction Factories


Arch Steel Building Factory

American Steel Span has been manufacturing pre-engineered, all steel buildings for almost 40 years. The manufacturing facility manufactures the world's most durable pre-engineered building designed to withstand the harshest weather conditions on earth including heavy snow, hurricanes, tornadoes and even earthquakes. All of our steel buildings are clearspan design, which means the interiors are 100% usable space!  

Steel Factory Mfg buildings are manufactured exclusively in the United States and our state of the art factory utilizes cutting edge technologies in order to provide a superior product. Our low-cost, easy to assemble, multi-use pre-manufactured arch buildings carry a 30 year rust warranty backed by the mills and are made from only the finest heavy gauge Galvalume steel. 

Excellence in manufacturing and 100% customer care are always a top priority at Steel Factory Mfg.

Rigid Frame Steel I-Beam Buildings Shipped Factory Direct
Steel Factory Mfg complex is recognized as one of the most sophisticated of its kind in the building construction industry. Shown here is some of the state-of-the-art equipment that used to manufacture rigid frame i-beams. Our use of only the most sophisticated machinery illustrates the factory's commitment to exceptional quality.


All of our engineering and design is done by computer programs which employ cutting edge technology. The CAD-CAM software used by our factory  is designed exclusively for the pre-engineering building industry. 

This Computer Numerically Controlled (CNC) sheeting line forms various profiles of panels up to 50 feet in length in a wide range of gauges. Our CNC machines use streams of digital information from our CAD-CAM outputs to cut, roll form, and pre-punch bolt holes in steel components.

Gas Metal Arc Welding

The latest Gas Metal Arc Welding (GMAW) technology is utilized resulting in the most consistent quality standards in the industry.

Trim Department
Our trim department features up-to-date roll-forming technologies to insure continuous quality and consistent shapes.

Pre-punched Bolt Holes

Highly accurate pre-punched bolt hole placement is assured through the utilization of the latest CNC technology making field assembly of buildings faster and easier. 

Galvanized Girts and Purlins
The factory produces its own galvanized girts and purlins unlike many other pre-engineered steel building manufacturers. Every girt and purlin produced in our factory is galvanized with a zinc coating which seals the surface of the steel to prevent rust.

Submerged Welding System

This state-of-the-art twin-arc submerged welding system is capable of producing structural members up to 72" in depth giving us the ability to manufacture clear-span buildings up to 200 feet wide! All welded components must pass strict quality control requirements.



"Made in America" is a statement that is used proudly by Steel Factory Mfg in describing the company's commitment to traditional American excellence in steel manufacturing!