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Excellent reasons to hot dip galvanise steel

The hot dip galvanise process is crucial as a means of protecting steel. Not only does it offer complete coverage, but it also provides longevity and toughness for the metal. It’s cost-effective too. These are just some of the reasons why it is an excellent option for steel.

This article delves deeper into these reasons and some additional benefits of hot dip galvanising.

Longevity and durability

Hot dip galvanising provides steel with a long life and durability ranging from 34 to 170 years, depending on the environment. Additionally, a maintenance-free finish reduces the carbon emissions usually associated with non-galvanised steel upkeep.

Low maintenance is particularly advantageous when steels are in remote or difficult-to-access areas, making hot dip galvanising ideal for structures such as bridges.


Compared to other coating applications, the hot dip galvanise process is more cost-effective. The Galvanizers Association states, “Over a 25-year project life, the cost of a ‘cheaper’ paint system is almost 70% more than the cost of galvanising. Likewise, the cost of a more ‘expensive’ paint system is almost double that of galvanising.”

Complete coverage

During galvanising, steel gets completely covered with a zinc coat to prevent corrosion, and the coating is applied evenly over all steel parts – inside and out – to provide complete protection. The hot dip galvanise process also produces a uniform layer of equal thickness, which is impossible with alternative protective coatings such as paint systems.

Coating toughness

Hot dip galvanising also enhances the toughness of steel, with the zinc coating metallurgically bonding to the metal, and becoming part of the structure. This is especially important for steel used in transportation and construction that is often stored, moved, handled, and susceptible to damage. Hot dip galvanised steel is far less likely to be affected by potential damage.

Speed of application

Protecting steel with a painted coat takes time when factoring in the double/triple paint layers and drying time. In comparison, the hot dip galvanising process is rapid. As a result, a completely protective coating can be applied in hours. This also includes preparing the steel for the galvanising process.

Faster construction

Galvanising also helps to keep construction projects on track. Once the steel is treated, it can be erected on-site immediately. There’s no need to wait days for the coat to dry.

Ease of inspection

When checking the quality of galvanised steel, the inspection process is straightforward. The zinc layer’s thickness is measured using an electronic probe to ensure compliance with BS EN ISO 1461, the British Standard for hot dip galvanised coatings.

Environmentally friendly

Finally, hot dip galvanising is environmentally friendly, as galvanised structures can be melted, repurposed, and reused without losing quality. (Find out more about galvanising and the circular economy here.) The zinc coating can also be reused in steel recycling, reducing waste and emissions.

In conclusion, hot dip galvanising provides numerous benefits for protecting steel, making it an excellent option for steelwork treatment. So, book your hot dip galvanising projects with Widnes Galvanising today.

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