stage truss system for sale 1.290*290mm ,50*3mm main tube 2. ... aluminum alloy,16Degree hardness 3.stage truss factory stage truss system for sale Stage truss specifications: Truss MaterialAluminum 6082/T6 16degrees ... .5m,2m,2.5m,3m,3.5m,4m(also design based on your request)Product competitive advantages:1. Aluminium material-durable ... facotry and contact with us at any time! stage truss system for sale