What are the standards for manufacturers of wind-resistant rolling doors and what are the qualifications for wind-resistant rolling doors? The national standards for steel wind-resistant rolling doors of Shandong Zhixin Doors and Windows Technology Co., Ltd. mainly include wind resistance, fire resistance and material requirements. Wind resistance: The wind resistance of the steel wind-resistant rolling shutter door is mainly based on the national standard GB/T 23451-2023 Electric Wind-resistant Rolling Shutter Door for Buildings. The standard clearly classifies the wind resistance performance, from level 1 to level 6, which is applicable to different wind pressure areas, such as inland cities to coastal areas with high typhoon incidence. The rolling door needs to pass the dynamic wind pressure test to ensure its wind resistance in practical application. Fireproof performance: For steel fire shutter doors, the latest national standard is GB14102.1-2024 Fire Shutters Part 1: General Technical Conditions. This standard clearly stipulates the fire resistance time, curtain material and tensile strength of transmission chain of fire shutter, aiming at improving the fire resistance performance and durability of fire shutter. Material requirements: The curtain plate, guide rail, lintel and other main structures of the steel wind-resistant rolling shutter door shall be made of steel conforming to Carbon Structural Steel (GB/T 700-2006) or Low Alloy High Strength Structural Steel (GB/T 1591-2018) to ensure its strength and durability. Sandwich materials (such as composite fire shutter) shall be made of aluminum silicate cellucotton, rock wool and other non-combustible materials, and the fire resistance limit shall be more than 3 hours to improve the fire performance.