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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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Quality assurance for the surfaces


TRUST, BUT CHECK!

The company that performs the galvanizing regularly checks the thickness of the zinc layer on the product with special measuring apparatus. In addition, the overall appearance and the extent of possible defects are examined. When larger visual defects are found the client is informed and a joint inspection is performed, the cause of the defects is determined, and a satisfactory solution for both parties will be found.

Upon the request of the contracting entity a measurement report is issued to prove the quality of the galvanizing process.

GALV-EST AS guarantees that the quality of the galvanizing is in accordance with the ISO 1461 standard on the condition that the steel that is used and the structure of the product are suitable for hot-dip galvanizing and in accordance with the requirements of the ISO 14713 standard. To get better results it is recommended to submit a steel certificate along with the order. The following table lists the minimum required thickness of the zinc surface on hot-dip galvanized materials.

The following table lists the minimum required thickness of the zinc surface on hot-dip galvanized materials.

The product and its
rated thickness
Localised thickness of the
layer (at least) µm
Average thickness of the
layer (at least) µm
Steel, >= 6 mm 70 85
Steel, < 3,...< 6 mm 55 70
Steel, > 1,5...< 3 mm 45 55
Steel, > 1,5 mm 35 45
Cast products, > 6 mm 70 80
Cast products < 6 mm 60 70


The following table lists the layer thickness for materials galvanized through centrifugal galvanizing:

The product and its
rated thickness
Localised thickness of the
layer (at least) µm
Average thickness of the
layer (at least) µm
• 6... < 20 mm diameter 45 55
• 20 mm diameter 35 45
< 6 mm diameter 20 25
Other products (including cast iron products)
• 3 mm thickness 45 55
< 3 mm 35 45