In order to improve anticorrosion properties of panels, zinc coat 225 u/m² is applied on the steel cup. From the outer side of the panel a two-layer polymer coat (prime and enamel) 30-40 μm thick is applied. The enamel on the outer side of the panel is a poly urethane coating modified by polyamide particles (PUR-PA). Such a coating is characterized with excellent corrosion resistance, preserves the door surface from mechanical damage, and withstands the exposure to detergents and chemical agents.

Enhanced corrosion resistance of Alutech sectional doors is also ensured by application of stainless steel component parts (roller brackets, roller cups, intermediate hinges) and coated side cups. Guiding profiles are made of high quality steel with zinc coat 18 – 22 μm thick. This ensures operability and appealing design of the door for many years of using.

To use corrosion-resistant materials is extremely important for places with humid and hostile environment, for examples, for car washes. Alutech offers a special solution: roller brackets and intermediate hinges of stainless steel, painted side plates and torsion springs with the improved polyester coating, tracking system of stainless steel with additional polyester powder painting.

Tests in the independent accredited laboratory, Republican Unitary Enterprise BelNIIS Institute (Minsk) showed that elements of Alutech door leaf withstood exposure by salt fog for 750 hours. This corresponds approximately to 15 years of door operation in coastal regions and such cities as Saint-Petersburg, Makhachkala, Murmansk, Arkhangelsk, Vladivostok, Magadan, Okhotsk, Novorossiysk, Sochi and etc.

Application of corrosion resistant materials is important not only for increased humidity premises, but also for coastal and industrial regions. Air in such regions is rich with sea salt mist. The leaf of Alutech sectional doors perfectly withstands the exposure of such factors and remains appealing throughout the entire operational life.