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Protective and anti-corrosion coatings - main categories / GLOSSARY

GLOSSARY of coatings used in EUROBOLT's offers:

ZN                – galvanic zinc passivation white thickness 3-25 microns. according to ISO 4042

ZN Z            – galvanic zinc passivation yellow thickness 3-25 microns. according to ISO 4042

ZN CZ          – galvanic black passivation 3-25 microns thick. according to ISO 4042

HDG    – hot-dip galvanized, min. 40 micro. according to ISO 10684
*(technological limitations)

TZN              – thermodiffusion zinc (sheradization) thickness 15-45 microns. according to the PN-EN 13811 standard
*(technological limitations)

FLZ / flZnc – flake (lamella) galvanized, 5-20 microns thick. according to ISO 10683 (GEOMET, DACROMET, DELTA PROTEKT, ZINCTECH)
*(technological limitations)

It is allowed to use mechanical zinc in the form of zinc paint in places where the zinc coating is missing, in particular in places where elements are cut or drilled.

*(technological limitations)

All fasteners covered HDG (tZn) / TZN and FLZ (flZnnc) sold by Eurobolt may not pass thread gauge tests due to the thickness and properties of the protective layer.

During the spinning process, during the coating of fasteners with the above types of zinc, holes, cavities and cavities may be filled.

There is also a risk of minor thread damage depending on the geometry and material of the part.

Glued traces and a certain percentage of glued details are allowed.

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