... alloy,16Degree hardness 3.stage truss factory stage truss system for sale Stage truss specifications: Truss MaterialAluminum 6082/T6 16degrees ... Outdoor and indoor performance and shows, Exhibitions,etcSize available for this aluminium:500*500mm,450*450mm,400*400mm,290* ... ,3.5m,4m(also design based on your request)Product competitive advantages:1. Aluminium material-durable and absolutely environmental ...