High Quality Aluminium Alloy Line Array Tower Truss Material : Aluminum Alloy. Usage : Exhibition Building, Stage Performance, Background Plate. Characteristics : Roof Truss. Structural Classification : Square Tube. Product Classification : Bolt/Screw and Spigot Truss. Shape : Square. Color : Sliver and Black. Unit Length : 0.5m, 1m, 2m, 3m, 4m, 5m or Customerized. Tube : Round. Truss Tube Diameter : 20mm, 32mm, 50mm. Application : Performance, DJ Band, Event, Exhibiti. Truss Tube Thickness…