The most typical damage of steel piles is the corrosive wear. More intensively corrosion of steel develops in the variable waterline zone.


Repair works in the zone of variable water level are carried out in air-dry environment using patented special underwater equipment - hermetic chamber. The repair technique depends on the degree of damages.

If the corrosive wear is less than 30% of the initial metal thickness, it will be sufficient to apply an anticorrosive coating on the steel surface. From the hermetic chamber the steel surface is blast cleaned and then a primer and a protective coatings are applied. Used materials are thoroughly selected, have the required certificates and have passed through long-term testing.


In presence of significant pile damages and for compliance with ice protection requirements, a thin reinforced concrete casings could be installed directly on pile surfaces, as well as protective bands of high-strength polymeric materials could be used.

In underwater zone cathodic protection is applied.


Repair and corrosion protection works were carried out in the ports of Gdansk, Odessa, Kaliningrad, Primorsk, Tallinn, Ventspils, Barcelona. All works are performed keeping the structures in operational conditions.