truss system is made of aluminum alloy main tube 50*3/4mm,brace 25*2mmdifferent size the max loading is different ,we choose the suitable truss according to your place dimension and the weight u would like to hangaluminum alloy 6082 or 6061T6the nomal size is below,we can also design the new products for your request1.1m/1.5m/2m/2.5m/3m/3.5m/4m, layer truss, H truss available 2 .Light exhibition truss 100mm*100mm/150mm*150mm/200mm*200mm/250mm*250mm3. 300mm*300mm/350mm*350mm/400mm*400mm/450mm*450mm/500mm*500mm4 Heavy duty truss 500mm*600mm/520mm*760mm/600mm*760mm/760mm*910mm5.Speaker truss:used for hanging audio or speaker,the materal is aluminium square truss.6.other special truss available .we can design it for you