... tube 3.14 kg capacity 4.TUV factory spigot truss 2012 tube 50*4.0 thickness aluminum spigot truss*MAIN ... .Wide use in many situation*WIDE APPLICATION WITH THE ALUMINUM SPIGOT TRUSSPerformance stage, outdoor and indoor concert, exhibit and display, ... movable performance stage, trade show, sales promotion , model ladder platform, , lectern, plinth and screen stand*PROCEDURE TO ...