The Function of Sectional Doors:

Sectional doors are die-cast from double-layered steel plates (inner and outer), with the door panels featuring a high-temperature polyester spray coating. Panel thicknesses range from 40 mm to 50 mm, 80 mm, and 100 mm. They are sturdy, provide thermal insulation and heat retention, are dustproof, and withstand wind pressure. The tracks are reinforced with hot-dip galvanized steel plates, ensuring strength and durability, while the external torsion springs have a service life of over 50,000 cycles. The lifting mechanism can be customized according to the user’s on-site requirements.