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What is the standard for hot-dip galvanizing?
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The basic specification for hot dip galvanized coatings on iron and steel articles is defined by a single standard, EN ISO 1461 ‘Hot dip galvanized coatings on iron and steel articles – specifications and test methods’. However, there are some exceptions to this standard (see thicker coatings below). BS 729 was the old British galvanizing ...
The British, European and International standard for hot-dip galvanizing is BS EN ISO 1461, which specifies a minimum coating thickness to be applied to steel in relation to the steels section thickness e.g. a steel fabrication with a section size thicker than 6 mm shall have a minimum galvanized coating thickness of 85 μm.
Hot dip galvanizing is a relatively simple process to specify and is covered by a single standard EN ISO 1461. Galvanizers Association can provide detailed advice on compiling your specifications, as well as reviewing design details to maximise the benefits of galvanizing your steel.
Hot dip galvanizing process steps. Main steps within the galvanizing process include : cleaning cycle – decreasing and chemical clean. fluxing – helps to wet the surface of the steel. galvanizing – immersion of steel into bath of molten zinc. post treatment (optional)
The International and European Standard for Batch Hot Dip Galvanizing - EN ISO 1461:2022. Batch galvanizing of steel structures and components is easily specified using EN ISO 1461:2022 ‘ Hot dip galvanized coatings on fabricated iron and steel articles — Specifications and test methods ’.
There are three main standards that govern hot-dip galvanized steel, and a handful of supporting specifications that design engineers and fabricators should become familiar with to promote a high-quality coating and ensure their steel design is suitable for hot-dip galvanizing.
Once considered only as a means of corrosion protection, hot-dip galvanizing is now specified for an array of reasons including lower initial cost, durability, longevity, availability, versatility, sustainability, and even aesthetics.
