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This is an electrolytical deposition of 5 – 15 ɲm basic layer of zinc and subsequent passivating layer which significantly raises its corrosion resistance. It is possible to raise corrosion resistance even more by application of the sealer.

In case of fasteners we can eliminate the high coefficient of friction (unstable negative attribute of zinc coating) by means of lubricants.

Our company performs all these procedurs using mass technology (in drums – small parts of maximum weight 200 g) and also using rack technology (for bigger, geometrically more comlex parts – of maximum dimensions 1900 x 650 x 250 mm).

In order to avoid the risk of hydrogen embrittlement of strenght parts we make Heat treatment at temperatures cca 220 ºC for required time.