... panel intensity and flat degree (density≥43kg/cbm)2. Thickness of door panel: 40mm/50mm3. Max. width: 6,000mm4. Max. height: 550mm5 ... . Galvanized steel of door sheet: 0.35mm/0.40mm6. Size: according to customers' demands7 ... : bracket, hinges, locks, handles roller, spring, rubber seal, and door opener14. Speed of opening: 0.1-0.2m/s15. The wind power ...