With a history that stretches back over 150 years, there are innumerable examples of galvanised steel in use in many environments, which prove its performance.
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Galvanized steel is all around us, in a whole variety of industries including road, rail, energy plants, oil and gas, agriculture, water and waste and sports and leisure. It can play an important role for buildings, bridges, facades, signal gantries, gates, balconies and even sculptures. Wherever there is a risk for corrosion of steel, galvanising should be used.
What are the advantages of galvanized steel?
Hot dip galvanizing steel offers many advantages and benefits: it&#;s proven, honest, sustainable and more. Find out below why it is crucial to galvanise steel.
1. Galvanizing is Durable
A galvanized coating is one of the most durable forms of corrosion protection on the market.
An average coating thickness of 85 microns, the same thickness as a sheet of A4 paper, can protect a steel structure for the better part of 100 years.
Even in coastal environments an 85 micron coating can still deliver a life expectancy of 30 years or more.
2. Galvanizing is Sustainable
The long-term durability provided by galvanizing is achieved at relatively low environmental burden in terms of energy and other globally relevant impacts.
In social housing projects, future maintenance costs will be borne by the local authorities. In public infrastructure projects, use of galvanized steel leads to lower maintenance budgets, releasing public funds for other purposes.
3. Galvanizing is Cost-effective
The true cost of protecting steel work from corrosion has to take into consideration two important elements, the initial cost of protection and the lifetime cost.
Hot dip galvanizing is often perceived to be more expensive than it is. There are two reasons for this: Firstly, that such a high performance coating is automatically assumed to be expensive. Secondly, the initial cost of galvanising relative to paint has changed significantly over recent years. Painting costs have steadily increased whilst galvanising costs have remained stable.
4. Galvanizing is Proven
Galvanizing is all around us, with the galvanising industry recording increased production year on year. From the smallest components to the largest structural elements, galvanized steel proves itself time and time again as trustworthy and reliable.
5. Galvanizing is Reliable
Galvanizing is a relatively straightforward and closely controlled process. The coating formed is consistent, predictable and simply specified.
Hot dip galvanizing is defined by a single standard &#; EN ISO .
There are a number of reasons why galvanising steel is the most reliable form of corrosion protection. Firstly, as a natural metallurgical reaction &#; a function of introducing clean steel into molten zinc at a specified temperature &#; galvanizing is a replicable process.
Unlike a paint coating, the metallurgical bond that is formed through galvanizing becomes part of the steel itself and is not merely a chemical or mechanical bond.
hot dipped galvanizing
6. Galvanizing is Honest
Corrosion protection that works from day one. If your galvanized coating is there you can be sure it is working. With hot dip galvanizing seeing is indeed believing.
Due to the metallurgical bond that is formed when steel is dipped into molten zinc, a galvanized coating offers straightforward, secure protection from the get-go. Hot dip galvanizing requires rust-free, uncontaminated steel for the process to occur. Once the coating is present, it is impossible for it to fail from underneath. Other coatings can adhere to residual contaminants, this can undermine performance, lead to flaking and cause premature failure.
If you can see a continuous galvanized coating on day one, you can be confident of long term protection.
7. Galvanizing is Predictable
A galvanized coating offers predictable corrosion protection that weathers in a linear fashion. Coating thicknesses are measurable and offer lifespans that can be easily forecast and relied upon.
Batch hot dip galvanizing is a standardized process which produces a quantifiable coating thickness. The coating is simply specified through British, European and international standards.
8. Galvanizing Offers Complete Coverage
Clean iron or steel components are lifted onto specifically designed jigs and immersed into molten zinc.
Hot dip galvanizing creates a very strong bond between zinc and steel, forming a coating that will last for generations. Alongside superior strength comes superior coverage, so that galvanized steel structures remain protected, even in their most vulnerable areas.
9. Galvanizing is Tough
Galvanizing has an abrasion resistance up to ten times better than organic paint coatings. The hot dip process is unique, producing a coating which is bonded metallurgically to the steel. As a result, galvanized steel has superior resistance to mechanical damage during handling, storage, transport and erection.
10. Galvanizing Offers Three Way Protection
The company is the world’s best galvanized steel coil factories supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.
Hot Dip Galvanizing protects valuable assets in multiple ways and has considerable economic and environmental benefits. It is the most durable corrosion protection on the market, and provides optimum performance without the expense or disruption of maintenance procedures. There are three ways a galvanized coating will protect your steel.
11. Galvanizing has a Fast Turnaround
With the right communication you can get steel galvanized within 24 hours.
Galvanizing is not a time-consuming process and in reality, it takes just a few minutes to dip prepared steelwork into molten zinc to form a durable, reliable coating.
Preparation of the steel need not take long either, but it must be thorough. Plus, if your galvanizing is prioritised in the same way that other parts of a project are, hot dip galvanizing will be a seamless, time-efficient process.
The actual process of dipping steel in molten zinc is in itself a straightforward, relatively immediate process, but for maximum efficiency, simple preparation is required.
Firstly, steel must be grease and corrosion free, so it is hung on jigs and cleaned, rinsed and fluxed. It is then dipped into a galvanizing bath of molten zinc at a temperature of 450°C, before it is left to cool.
By arrangement, it is likely possible in 24 hours.
The metallurgical reaction occurs in a matter of minutes, with the whole galvanizing procedure taking only a few hours. In practice of course, there are many orders being processed at a galvanizing plant at any one time, so the typical turnaround for hot dip galvanizing is about three days.
Today&#;s galvanizing plants have highly efficient logistics in place, meaning that your steelwork can be galvanized in as little as 24 hours if arranged in advance.
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Hot-dip galvanizing is a process of applying a layer of molten zinc to steel to give it extraordinary durability, that lowers maintenance and repair costs &#; for 50, 75, and sometimes up to 100 years &#; by protecting steel from rust and corrosion. Painting and plastic coatings protect steel as long as they stay intact, but the metal beneath them can begin to rust as soon as these kinds of protective coatings are damaged. Hot-dip galvanizing forms a layer of a zinc-iron alloy topped by a layer of pure zinc that sacrificially protects steel from the forces of corrosion in even the harshest climates and the most chemical-laden environments, while offering many economic advantages even during the construction process.
We have compiled 10 reasons to choose galvanized steel for your next fabrication or construction project. Let&#;s start with an universally appealing property of galvanized steel.
Low Cost
Many fabricators, architects, planners, and engineers have the impression that, as the &#;Cadillac of steels,&#; galvanized steel must be prohibitively expensive. When they get cost quotes for galvanized steel, however, they find that galvanizing is a very realistic construction option.
The costs of paint and powder coatings for steel have increased about 100 percent over the last five years, but the cost of zinc has remained relatively stable. And, when the cost of maintenance is considered, galvanized steel is a clearly less expensive building material. That&#;s because direct maintenance costs are typically 2 to 5 times the cost of construction materials over the life of a structure. The costs of having a manufacturing facility or a building out of service for maintenance can total, over its lifetime, 5 to 11 times the cost of the building materials.
The expected time to first maintenance for galvanized steel is 50 years or more. That&#;s a tremendous cost savings compared to other materials.
Low Maintenance
There is not a lot you have to do to maintain galvanized steel. You do have to repair fire damage and mechanical abrasion, but that is equally true for any building material. But, you never have to reapply paints and powders to keep galvanized steel in prime condition, because the protective layer is literally part of the metal beneath it.
Total Protection
Hot-dip galvanizing is a total-immersion process. Every square millimeter of the surface of steel is dipped into molten zinc to form a protective iron-zinc alloy covered by pure zinc. Zinc selectively reacts with corrosive compounds to protect the iron beneath it, and even if a small area of the top coating of zinc is damaged, the iron-zinc alloy still works to fight corrosion.
Self-Healing
Nuts, bolts, screws, rods, and pipes made with galvanized steel are more prone to punishment from contact with corrosive substances and trapped moisture than larger, flat pieces of hot-dip galvanized steel. New coatings protect these parts from corrosion to give them the same longevity as the rest of the structure.
Easy Use
Welding stainless steel is a technical challenge. Welding galvanized steel still requires welding skill, but needs fewer protections and offers a better worker safety profile that most other metals.
Quick Turnaround
Galvanizing plants are used to accommodating the needs of customers who need their galvanized steel and need it right now. And, because hot-dipped galvanized steel is immune to the effects of normal levels of humidity, normal variations in temperature, and UV light, it&#;s easy to keep an inventory of galvanized parts for immediate replacement needs.
Simple Inspection
The facility that produces your galvanized steel is well versed in the ASTM standards for quality product. And because zinc doesn&#;t react with unclean steel, visual inspections are very easy to perform.
Reliability
Galvanizing is well-established science. Quality control is built into the manufacturing process through decades of experience, observation, and research.
Long-Lasting
No other metal used in construction and fabrication has up to a 100-year life leading to first expected maintenance. Structures made with galvanized steel last for generations.
Resistance Coating
The galvanizing process bonds zinc to steel with a resistance of approximately 3,600 psi. Tight intermetallic bonding ensures that the protective coating on galvanized steel will last a human lifetime, and considerably more.
Do you have questions about galvanized steel? We would be happy to answer all your questions about everything from repairing galvanized steel to painting it! Call us when we can be of assistance!
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