Bolt Truss Aluminum 400x400mm Heavy Duty

400x400mm heavy duty square bolt truss is a popular lighting truss in China and Africa. It comes with sided tubes as ladder to strengthened the vertical forces as beams in box truss systems and all styles of roof trusses. Bolted connection. Its CPL is 450kg and UDL, 55 kg at 16m span.TUV certificate and Reasonable Factory Cheap Price.