Fasteners of weatherproof steel are used in the construction of bridges, power energy structures and other objects with lack of maintenance in complex climatic conditions.
Because of alloying a natural protecting layer appears on the wares, thus they need no further painting.
As a result the cost of maintenance is much lower.
Such steel is produced at Cherepovets Iron and Steel Works.
Metal structures of this steel are made at Severstal Steel Decisions.
And now Orel Steel Works has mastered the manufacture of fasteners of weatherproof steel. So far these are bolts of three strength classes and rivets. (Ukrainian metal)