[Span-Tech Fabric Building Systems Span-Tech Buildings is a division of Hawkeye Steel Products, Inc. we manufacture steel framed, fabric covered buildings. Fabric Covered Buildings, Hoop Buildings, Hoop, Barns, Fabric Buildings, Fabric Structures, RV Carports, Membrane Structures, Barns, Ag Buildings, Flat Grain Storage, Riding Arenas, Indoor Riding Arenas, Steel Sheds, Steel Buildings, Steel Framed Buildings, Steel Sheds, Tension Fabric Buildings, Truss Arch, Horse Riding arenas, nternational manufacturers permanent and temporary tension fabric buildings including horse riding arenas, truss arch, fabric covered buildings, warehouse, agricultural & livestock housing, airplane hangars, construction equipment garages, sports buildings, sand & salt storage facility, emergency shelters and more.]