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Hot-dip galvanized rebar is simply
bare steel that is coated with zinc. In order
to coat black reinforcing steel with zinc, it is
first cleaned by dipping it in a series of solutions
that remove dirt, oil, oxides, and other
contaminants from the surface. Zinc is applied
to the clean steel by immersing it into a bath of
liquid zinc that is heated to 830 °F (430
°C). The liquid zinc metallurgically reacts
with the iron producing a tightly adherent coating.
The steel is then set aside to cool prior to
inspecting it for conformance to the appropriate
specifications.

It is inherently simple, and this
simplicity is a distinct advantage over
other corrosion-protection methods. To learn
more about the process of hot-dip
galvanizing steel after fabrication contact
your
regional galvanizing association.