... 6082/T6 aluminum alloy,16Degree hardness 3.stage truss factory stage truss system for sale Stage truss specifications: Truss MaterialAluminum 6082/T6 16degrees hardnessTruss size290mm* ... products:various kinds of aluminium alloy stage light truss, background truss, layer truss, exhibition truss, movable stage, plexiglass stage, assembled stage, foldable stage, flight case, instrument case, standard ...