Aluminum stage is reserved for those seeking water or fire proof stage decks for outdoor sports venues. Aluminum stage frame with truss structure is more strong, durable for outdoor concert, church, event, show, etc.
Aluminum stage details for your reference: 

RK Aluminum stage

1. Material of aluminum stage platform: carpet finish, non-slip industrial material or tuffcoat finish.
2. Shape of aluminum stage frame: square shape and rectangle shape and the size includes 1*1m, 1*2m, 4*4ft and 4*8ft.
3. Height of aluminum stage legs: optional
4. Packing of aluminum stage: cartons, trolley with iron wheels or flight cases.