Simpson steel frame building company is based in Columbus, Kansas with over 20 manufacturing plants and shipping points throughout the United States. The company enjoys a distinct freight advantage within the industry. Established in 1982, Simpson steel frame building has shipped into all 50 states, Canada and Central America. Our products include: rigid steel frame building units (wide and tall span commercial/industrial), mini storage (single and multistory) truss (patented truss design, proprietary product of Simpson) and non standard (specially designed structures). With over 2000 units completed nationwide, chances are there is a Simpson steel frame building within 50 miles of where you live.