Galvanized Steel Frame is steel that has gone through a
chemical process to keep it from corroding.
The steel gets coated in layers of zinc oxide because this
protective metal does not get rusty as easily.
The coating also gives the steel a more durable, hard to scratch
ﬁnish that many people ﬁnd attractive.
For countless outdoor, marine or industrial applications,
galvanized steel is an essential fabrication component.
One of the most common ways of making steel resist rust is
by alloying it with a metal that is less likely to corrode like zinc.
When steel is submerged in melted zinc, a chemical reaction
permanently bonds the zinc to the steel.
Therefore, the zinc isn't exactly a sealer, like paint, because it
doesn't just coat the other metal. It actually permanently
becomes a part of it.
The most external layer is all zinc, but successive layers are a
mixture of zinc and iron, with an interior of pure steel.
Zinc protects steel in two ways.
First, it is highly resistant to rust; iron, a major component of
steel, reacts very easily with oxygen and moisture and will
Secondly, the outer layer also protects the steel by acting as a
If, for some reason, rust does take hold on the surface of
galvanized steel, the zinc will get corroded ﬁrst.
Galvanized steel frame can be found almost everywhere.
Many individuals live in steel frame houses, and buildings are
often made with galvanized steel roofs.
There are multiple steel parts in cars that help protect them
from the weather, and it's used in many marine applications due
to its ability to withstand the salt and the elements.
Besides being inexpensive, durable and effective, this metal is
also popular because it can be recycled and reused multiple
The Galvanizing is lower in ﬁrst cost than many other
commonly speciﬁed protective coatings for steel.
Even in cases where the initial cost of galvanizing is higher
than alternative coatings, galvanizing is almost invariably
cheapest in the long term, because it lasts longer and
needs less maintenance.
The life expectancy of galvanized coatings on typical
structural members is far in excess of 50 years in most
rural environments, and 20 to 25 years plus, even in severe
urban and coastal exposure.
Galvanizing is carried out to Australian / New Zealand
Standard 4680, and standard, minimum coating thicknesses
are applied. Coating life and performance are reliable and
A galvanized coating has a unique metallurgical structure
which gives outstanding resistance to mechanical damage
in transport, erection and service.
Galvanized coatings corrode preferentially to steel,
providing cathodic or sacriﬁcial protection to small areas of
steel exposed through damage.
Every part of a galvanized article is protected, even
recesses, sharp corners and inaccessible areas.
Galvanized coatings are assessed readily by eye, and
simple non-destructive thickness testing methods can be
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