How Long Can the Galvanization Process Last?

In the construction and metal industry, galvanization is one of the most popular metal protection methods. This process involves coating a metal surface—usually steel or iron—with a layer of zinc to prevent rust and corrosion.

However, one important question often arises: how long does galvanization actually last?

What is Galvanization?
Galvanization is the process of coating metal with zinc (Zn), either through hot-dip galvanizing or electroplating. The goal is to create a protective layer that can resist oxidation (rust) when the metal is exposed to moisture or water.

Galvanizing Durability: Can Last Decades
The durability of galvanizing depends heavily on the following factors:

1. Zinc Coating Thickness
The thicker the galvanized layer, the longer it lasts.
For example:

A zinc coating of 85–100 microns (the result of hot-dip galvanizing) can last 20–50 years, depending on environmental conditions.

Thin coatings such as zinc electroplating typically only last 5–10 years and are less suitable for outdoor areas.

2. Environment and Weather Exposure
In industrial or coastal areas with high salt and pollution levels, galvanizing may last 10–20 years.

In urban environments with moderate humidity, galvanizing can last 30 years or more.

3. Maintenance and Installation
If galvanized products are scratched or damaged during installation, their durability can be reduced. Therefore, careful and proper installation procedures are essential to maintain the protective coating.

Signs of Galvanized Coating Wearing Down
The following symptoms indicate that galvanizing is wearing out:

Color changes from silvery to dull

White spots appear (early zinc corrosion)

Reddish rust appears in some spots

If these signs appear, re-treatment or additional protective painting may be considered.

Need Quality Galvanized Materials for Your Project?

PT Intisumber Bajasakti provides various types of galvanized products, such as BRC fencing, wire mesh, CNP iron, checkered plate, and steel pipes, using a galvanization process that meets industry standards. Suitable for long-term needs in construction, road, and heavy industry projects.

📞 Consultation & Orders: +6221 66675999
🌐 Official Website: www.intisumberbajasakti.com

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