Page 40 - Catalogue Jourdain - Contention - T34 - EN

GALVANISATION STORAGE
VERY IMPORTANT
HOT-DIP GALVANISING PROCESS AND STORAGE RECOMMENDATIONS
All our equipment is hot-dip galvanised in compliance with standard ISO 1461. Hot-dip galvanising provides a zinc-based surface coating, intended to protect steel from corrosion.
By the nature of their design, all our products are fully protected both on the outside and inside thanks to the technique of immersion in a liquid zinc bath maintained at 450°C.
The 1461 standard, “Hot-dip galvanized coatings on fabricated iron and steel articles”, defines the properties, minimal thicknesses and characteristics of hot-dip galvanisation coating, together with the trial methods for checking the thickness of the zinc per surface area unit, its appearance and adherence, as well as the criteria for conformity.
Depending on the design of the part, the chemical composition of the steel, its thickness, its surface appearance and other technical parameters, the thicknesses of the zinc deposited are variable, but always within the values defined in standard 1461. Our partner galvanisation plant is ISO 9001 certified.
Zinc, when exposed to the atmosphere, reacts naturally with the ambient elements: moisture, oxygen, carbon dioxide, etc. to form a film. In terms of appearance, this results in a reduction of the surface’s metallic sheen.
The film produced is insoluble, with a high level of adhesion, and provides added protection to the coating.
However, the structure of this film is altered in contact with stagnant water, and white stains with a low level of adhesion and no protective characteristics quickly form, although this does not affect the level of protection provided by the zinc.
Galvanised equipment must only be stored on tannin free wood, and under no circumstances should it have direct contact with the ground. Air must be able to circulate freely around the parts and stagnant water must be avoided.
Contamination or prolonged contact with slurry, farmyard manure, urine, silage, weed killers, fertiliser, road treatment products, pesticides, disinfectants, or any other chemical product can, in certain cases, lead to rapid alteration of the protective zinc coating.
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CAUTION! In order to prevent corrosion of steel and zinc due to prolonged contact with silage, slurry or muck, it is recommended that bituminous paint TR0005 should be applied before use, and periodically thereafter,
in order to protect equipment: post feet, barrier and cubicle bottoms, knee bars, brackets, etc.