Aluminum-Alloy Structure Tent Available diameter:15m,20m,25m 1. Tent frame use hard pressed extruded Aluminum Alloy 6061 /T6 2. The tent fabric is double PVC coated polyester textile. It is high quality at waterproof, flame retardant to DIN4102 B1, M2, UV resistant.3. The tent maximum allowed wind speed is 100KM/h. The security and variability of our products have reached the standard of similar ...