LLC ZVK "BERVEL" The first Russian to produce a large-scale high-strength steel fastening (blots, nuts, pucks) without requiring additional corrosion-resistant protective coating, and the fastening used a unique technology that has no equivalent in the Russian Federation. The supply of fastenings for the installation of unserviceable metal construction is carried out as part of the construction and reconstruction of bridge crossings.The fastening (bolts and nuts) has additional marking "C" (COR-TENTM)*.
* Atmospheric-resistant steel (cortins) is a pedal steel resistant to atmospheric corrosion.
The material, developed in the United States in the 1960s, was registered under the name COR-TENTM.
COR-TENTM successfully overcomes rust, the most vulnerable property of steel, using the unique function "cream treats rust".
When exposed to the atmosphere without painting, COR-TENTM rusts like normal steel, but soon the pitting elements in COR-TENTM produce a protective surface layer of fine-grained oxide film, which reduces corrosion rates in a single way.
Using this excellent property, COR-TENTM can be used without painting, thus nullifying the widespread view that "the steel must be permanently surface protected, including by paint coating".
But if paint is applied to COR-TENTM, the life of paint is multiplied by the coatings of conventional steel, and the cost of repainting is reduced accordingly.
Since its development in the United States, COR-TENTM has been used in all applications of steel, such as bridges, rail and other metal construction, and in recent years unpainted COR-TENTM designs have attracted attention as particularly suitable for resource savings and environmental problems.
Thus, CORE-TENTM helps reduce life cycle costs and environmental pressures in a wide range of applications.
At present, the Cortenovsky analogy has been released, including in Russia, but we are only at the beginning of the widespread use of this material.
