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Quality requirements

Contact
GALV-EST AS
Kuusalu vald 74604
Kiiu Harjumaa
Phone +372 60 35 770
galv-est@galv-est.ee

Customer service:
Phone +372 603 5773
GSM +372 53 33 0093

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Assessing the compliance of corrosion protection

BEFOREHAND IT SHOULD BE KNOWN TO WHICH ENVIRONMENTAL REQUIREMENTS THE PRODUCT MUST ADHERE AND WHAT THE DESIRED DURABILITY OF THE SURFACE MUST BE. THE THICKNESS OF THE ZINC LAYER CAN BE CONTROLLED WITH THE TYPE OF STEEL SELECTED.

As is the case with painting, it is important to know the weather or environmental conditions which the hot-dip galvanized steel structure will be subjected to. The following table shows how to determine the corrosion protection levels of a product and gives an estimate on the durability of the coating.

ISO 14713
Corrosion-
category
Typical outdoor environment Average corrosion level of the zinc
�µm//year
ISO 14713
Corrosion level description
C1 Solitary mountain regions, dry inland <0.1 Very low
C2 Dry/country/city, inland ââ?¬â?? occasional condensation 0.1 - 0.7 Low
C3 Coastal regions, high humidity inland 0.7 - 2 Average
C4 Seaside (low wind), swimming pools 2 - 4 High
C5 Seaside (riffles)/land wind 4 - 8 Very high