Sectional overhead garage door

Aluminum overhead sectional garage doors are versatile, economical, and practical solutions for various applications. Hongfa overhead sectional doors are ideal for high-insulation projects in LEED-certified institutions and are also suitable for security purposes in police and military installations, as well as detention centers. They are designed for use in the mining industry, including iron, nickel, and diamond sectors, as well as in airport hangars, and are resistant to rust, making them perfect for marine and corrosive environments.

These industrial sliding doors feature molded inner and outer steel surfaces coated with polyester, treated at high temperatures. With a thickness of 40-50mm, they offer solid construction and superior insulation, ensuring dust-resistance and wind resistance. The design incorporates galvanized steel sheets and a reinforced external torsion spring balance system, providing a lifespan of over 50,000 cycles. The doors include both internal and external seal-tight mechanisms for frost, moisture, and heat insulation.

For enhanced safety, the doors are equipped with an airbag bounce mechanism and infrared sensors. When resistance or obstacles are detected, the safety device automatically rebounds, preventing potential damage to pedestrians and vehicles.