It was found during the 18th century that molten zinc would react with steel to form a metallurgically bonded protective coating that had superior durability to any other coatings for atmospheric exposure. While all early hot dip galvanized items were manufactured by dipping them in batches in a molten zinc bath, different technologies have been developed to more efficiently apply zinc-based coatings to continuously manufactured products such as wire, sheet and tube. Extract from INGAL Specifiers' Manual - 3rd Edition. Full manual at www.ingal.com.au
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