Product Name: prefab space frame steel structure  Jiujiang bridges Material Truss structure, mild steel; Stainless steel, aluminum alloy 6082-T6 truss Coating Spray Painting; Galvanization;Powder Coated Color Sliver, White , Darkgray; or as Client's Request Finishing treatment Hot Dip Galvanization or Painting Steel code Q235-B; Q345-B; Stainless steel, aluminum alloy 6082-T6 Fabrication Advanced Automatic Bolt /Welding Machines Quality control GB/T19001-2000----ISO9001:2000 Advantages 1.Stable and Aesthetic 2.Structure is durable for 50years 3.Fast and easy to install 4.Extensive Applications: Storage, Warehouse, Exhibition Hall,Terminal Building, Stadium, Theater, Special-shaped Buildings, etc 5.High anti-rust performance 6.Flexible composition: Doors and Day-lighting roof could be  installed at any position