Materials & Standards – CommandFence

Q: Is chain link suitable for typhoon-prone areas?

Chain link is very open and catches little wind. Command's CLY chain link is hot-dip galvanized with an optional PVC coating. Its storm performance depends on the posts, tension wires, bracing and footings.

Typhoon-Ready Perimeter Fencing: How to Specify a Fence That Survives Wind, Rain and Salt Air

command fence — Wed, 21 Oct 2026 10:00:13 +0000

3D V-mesh perimeter fence supplied by Command for the Chancay Port terminal in Peru, a coastal site with constant salt air.

By Blade, Project Sales Specialist · 21 October 2026

Short version: a fence comes through a typhoon when the whole system was built for wind, not just the mesh. That means open mesh, posts and footings sized for the site, decent fixings, and galvanizing plus powder coat if you are anywhere near the sea.

Storm note · 20 October 2026

Super Typhoon Rosal (Champi) entered the Philippine Area of Responsibility on 20 October with sustained winds of 185 km/h. If your site is in its path, follow PAGASA and your LGU’s advisories. The fence can wait.

After a big storm, the photos contractors send us tend to look alike: a fence line where one stretch is still standing and the next is lying in the mud. The question is always the same. Why did one part survive and the other fail?

Usually it comes down to five things: how much wind the fence catches, the posts, the footings, the connections, and corrosion. We go through each of them below and finish with a simple checklist for walking the fence line once the weather has cleared.

In short

Open mesh fences catch much less wind than solid hoardings, walls or fences covered with shade cloth.
Most storm failures start at the posts, footings and connections, not in the mesh panels.
Salt spray and standing water cause a second wave of damage through corrosion.
Wind resistance belongs to the whole system on your site. A product name alone doesn’t give you a rating.

1. Why Perimeter Fences Fail in Strong Winds

Wind area: a sheet of shade cloth changes everything

Wind pressure goes up with the square of wind speed. With the simplified formula q ≈ 0.613 V², a 200 km/h gust (about 55.6 m/s) gives a dynamic pressure of roughly 1.9 kPa. Treat that as a reference number, not a design load. The real pressure on a fence depends on your local code, the terrain, gust factors and how solid the fence is.

Open mesh such as chain link and welded panels lets most of the wind pass through.

This is where open mesh helps. On 358, 2D, 3D and chain link fences, most of the air goes through the openings instead of pushing on a solid face. The load isn’t zero, and some meshes are denser than others, but it’s a far better starting point than sheet-metal hoarding.

So the cheapest thing you can do before a storm: take down banners, shade cloth, dust screens and signs tied to the fence. With those still on, an open fence behaves like a sail.

Load path: from panel to soil

Panel→Fixings→Post→Footing→Soil

The wind hits the panels, the clamps and bolts pass the load to the posts, and the posts pass it into the footings and the soil. The fence is only as strong as the weakest step: a light post, wide spacing, a small footing, soil softened by days of rain, or a rusted clamp. Gates are a separate case. Gate posts take concentrated loads and need their own design, not the same post as the straight runs.

2. Specifying Fences for Typhoon-Prone Sites

358 anti-climb fence installation at Chancay Port: posts set on a continuous concrete base.

Below are the standard options for our 358G anti-climb fence, next to what we would check for an exposed or typhoon-prone site. We make the panels and posts in our own factory, so post size, wall thickness, spacing, base plates and coating can all be changed to match your engineer’s numbers. The standard sizes are where the discussion starts.

358G standard options vs. typhoon-site checks
Component	358G standard options	Confirm for typhoon-prone sites
Height	1.5 / 2.0 / 2.5 / 3.0 m	Wind load on the full height plus any top extensions
Mesh	Ø4.0 or Ø4.5 mm wire, 76.5 (or 100) × 12.5 mm spacing	Wire diameter, panel stiffness, clamp strength
Posts	Cold-formed I-post 54.4 × 100 mm, 1.5 / 2.0 mm wall	Bending and deflection for your wind zone; heavier sections made to order
Post spacing	Set by panel module and installation drawings	Reduced spacing where calculations require it
Footings	Designed for site soil conditions	Depth, size, groundwater level, scour risk
Fixings	Purpose-made clamps and anti-theft bolts	Corrosion resistance and pull-out strength
Surface protection	Zinc 80–120 g/m² + polyester powder coat 100–120 μm; full hot-dip galvanizing (550 g/m²) available	Coating system matched to the site’s corrosion category and design life

For the Philippines and other typhoon markets

If you send us the site location or wind zone, fence length and height, terrain, preferred mesh, soil or footing conditions, anti-climb add-ons and the number of gates, we can come back with a proposal for posts, spacing, connections and coating. Your local structural engineer then signs off the final design.

3. The Second Challenge: Salt Air and Corrosion

Wind is only half of it. After the storm comes the sea spray, water standing around the post bases for days, and scratches from flying debris. Rust tends to start at the post bases, the welds, cut edges and under bolt heads. Often nobody notices until the next storm finds the weak spot.

For coastal projects we use two layers of protection:

Hot-dip galvanizing after welding. We weld the panels first and galvanize afterwards, so the welds and cut ends get zinc too. The zinc keeps protecting the steel even where the top coat gets scratched. Standard 358G panels carry 80–120 g/m² of zinc. For the harshest sites we can hot-dip galvanize the complete component at 550 g/m².
Electrostatic polyester powder coat. 100–120 μm on top of the zinc, UV resistant, in any RAL colour.

If your project calls for ISO 1461 or ASTM A123/A123M galvanizing, or ISO 9227 salt spray testing, put it in the purchase specification and we will quote and test to it.

Three questions to ask any fence supplier

Is the steel galvanized before or after welding? (Ours is galvanized after welding.)
What are the zinc and powder-coat thicknesses, and how are they measured?
Can you provide test reports for the actual coating system and a written warranty?

4. After the Storm: A 10-Minute Fence Inspection Checklist

Wait until the authorities say it is safe to go out, and keep clear of fallen power lines and damaged gates. Then walk the whole fence line with a phone and photograph anything on this list:

Posts: leaning, twisting or cracking at the base.
Footings: cracked concrete, washed-out soil or exposed foundations.
Panels: bent wires, broken welds or panels that have shifted.
Fixings: missing or loose clamps, bolts and anti-theft connectors.
Coating: scratches, blistering, red rust or standing water at the posts.
Gates: moved gate posts, damaged tracks or hinges, stiff opening.
Debris: branches, plastic sheeting and signs caught on the fence.
Record: number each problem spot and note its length, height and quantity.

Small scratches can be touched up with a repair paint that matches the original coating. A bent post, a footing that has rotated or several failed connections is a different matter. Get that section inspected properly, because paint won’t fix a structural problem.

Found damage? Send us your photos and dimensions and we can supply matching replacement panels, posts and fixings.

5. Project Reference: Chancay Port, Peru

PVC-coated chain link fencing at the Chancay Port terminal area.

Chancay Port sits on the Pacific coast about 78 km north of Lima. It was developed by COSCO Shipping Ports and opened in November 2024. We supplied perimeter fencing for the terminal, including 3D V-mesh panel fence, 358 anti-climb fence and PVC-coated chain link fence. The site photos in this article were taken during visits in October and November 2024, shortly before the port opened.

Peru doesn’t get typhoons, but the salt air at Chancay is the same problem coastal sites in the Philippines deal with every day. A few details from that job carry over directly:

The 358 panels were set on a continuous concrete kerb instead of separate post holes, which spreads the load and keeps the bottom of the mesh off wet ground.
Different zones got different fences: anti-climb 358 where security matters most, 3D panels along the rail yard, and open chain link with a top rail across the wide yard areas where visibility matters.
The welded panels and posts were hot-dip galvanized after welding and then electrostatic powder coated at our factory, so no coating work was needed on site.

Read the full case study: Chancay Port Fencing Project Solutions

6. Frequently Asked Questions

Is an open mesh fence better than a concrete wall in typhoon areas?

Not automatically. Open mesh catches less wind, but how either one performs depends on the structure, the footings and the site. Both should be designed to your local code.

Can I strengthen my existing fence instead of replacing it?

Often, yes. Replacing damaged posts, adding intermediate posts, upgrading the fixings or reinforcing footings can all help. Find out why it failed before deciding.

Is chain link suitable for typhoon-prone areas?

Chain link is very open and catches little wind. Our CLY chain link fence is hot-dip galvanized with an optional PVC coating. Its storm performance depends on the posts, tension wires, bracing and footings.

Is your 358 fence certified for 200 km/h winds?

A wind rating belongs to a complete fence system on a specific site, not to a panel on its own. Send us your design wind speed and site details and we will build the system around your engineer’s calculation, with heavier posts and closer spacing where they are needed. See the full 358 fence specification and buying guide.

How long is delivery to the Philippines?

Standard products are typically produced in about 30 days, depending on quantity and customization. We ship to Manila, Cebu, Davao and Subic; sea freight time depends on the port and sailing schedule, and we confirm it with every quotation.

What information do you need for a quotation?

Project location, total length, height, preferred mesh type (358 / 2D / 3D / chain link), surface finish, design wind data (if available) and destination port. A site plan or footing details helps us quote faster.

Fence panels wrapped and loaded for export at our factory in Hebei, China.

Blade

Project Sales Specialist, Command · 3 years in perimeter fencing

Blade works with contractors and developers on port, industrial and infrastructure fencing projects, from the first drawings to shipping. If you want to talk through a site, send him the location and fence length through the quote form below.

Get a Fence Specification for Your Typhoon-Prone Site

Planning a perimeter for an airport, port, industrial park, substation or logistics centre in the Philippines or another typhoon-prone market? Tell us your site location, fence length and height, and our engineering team will reply with recommended mesh, posts, connections, coating and a CIF quotation.

Request a Quote Chat on WhatsApp

Command (Hebei Command Metal Products Co., Ltd.) makes high-security perimeter fencing in Raoyang County, Hebei, and ships it to airports, seaports, industrial plants and infrastructure projects worldwide.

Galvanized Steel Fences vs Aluminum Fences: Which is Right for You?

command fence — Fri, 17 Jan 2025 01:46:25 +0000

Understanding Galvanized Steel Fences

Galvanized steel fences are constructed from steel that has undergone a process known as galvanization, wherein the metal is coated with a protective layer of zinc. This protective coating is applied to prevent corrosion and significantly enhances the durability and longevity of the steel. The galvanization process typically involves either hot-dip galvanization or electro-galvanization, with hot-dip providing a thicker, more durable coating ideal for outdoor applications.

One of the primary advantages of using galvanized steel for fencing is its exceptional resistance to corrosion. This allows galvanized steel fences to withstand harsh weather conditions, making them suitable for various environments, from coastal areas with high humidity to regions experiencing extreme temperature fluctuations. The low maintenance requirements associated with galvanized steel fencing contribute to its appeal, as it does not require regular painting or treatment, unlike other materials such as wood.

In terms of strength, galvanized steel fences are known for their robustness. This quality makes them capable of withstanding impacts and forces that may compromise weaker materials. Consequently, they are often preferable in high-security applications, where durability is paramount. Furthermore, galvanized steel can come in a variety of styles and finishes, providing aesthetic versatility. Options range from traditional picket designs to more modern privacy panels, allowing homeowners and businesses to choose a look that complements their property.

Overall, galvanized steel fences present a compelling choice for anyone seeking a durable, low-maintenance fencing solution. Their combination of strength, corrosion resistance, and aesthetic adaptability make them a practical option for both residential and commercial properties. As such, understanding these benefits can help you make an informed decision when considering fencing materials.

Exploring Aluminum Fences

Aluminum fences have gained popularity in recent years due to their lightweight nature and versatility, making them an appealing option for various fencing needs. One of the most significant advantages of aluminum fences is their inherent resistance to rust and corrosion, a crucial aspect for homeowners situated in humid or coastal areas. Unlike galvanized steel fences, which may require periodic maintenance to prevent rust, aluminum fences remain resilient against the effects of moisture, ensuring longevity and low upkeep costs.

In addition to their resistance to environmental factors, aluminum fences are known for their ease of installation. The lightweight properties of aluminum allow for quicker handling and assembly, reducing labor costs and time spent on installation. This factor is particularly beneficial for DIY enthusiasts who prefer to take on their fencing projects without the help of professionals. With a variety of pre-manufactured panels available, homeowners can find the perfect fit for their properties without extensive modifications.

Another compelling feature of aluminum fencing is its array of design options. Available in an extensive range of colors, finishes, heights, and styles, aluminum fences can complement virtually any architectural aesthetic, enhancing the overall appearance of the property. Whether you prefer a classic wrought-iron look or a modern minimalist design, the versatility of aluminum makes it an ideal choice for any landscape.

However, it is essential to consider the durability of aluminum fences compared to alternatives like galvanized steel. While aluminum is robust and suitable for various environments, it may not offer the same strength as steel in high-impact situations or for security. Homeowners should carefully assess their specific needs and environments to determine the most appropriate fencing material for their project.

Advantages of Galvanized Steel Fences

Galvanized steel fences offer numerous advantages that make them a preferred choice for many property owners, particularly when compared to alternatives like aluminum. One of the primary benefits of galvanized steel is its superior strength and durability. This material is exceptionally robust, making it ideal for security applications and high-traffic areas; it can withstand significant force and is less likely to warp or bend under pressure.

In addition to its strength, galvanized steel is renowned for its long lifespan. When properly maintained, galvanized steel fencing can last for decades without significant deterioration. This longevity not only enhances its appeal but also contributes to lower long-term maintenance costs, making it a wise economic investment over time. Unlike aluminum, which can be susceptible to dents and damage, galvanized steel maintains its structural integrity and appearance, reducing the need for frequent repairs.

Weather resistance is another crucial factor that distinguishes galvanized steel from other materials. Galvanized steel is coated with a protective layer of zinc, making it highly resilient against extreme weather conditions, such as heavy rain, snow, and intense sunlight. This protective layer prevents rust and corrosion, ensuring that the fence remains functional and visually appealing throughout its service life.

Moreover, the aesthetic appeal of galvanized steel fences cannot be overlooked. They offer various customization options, allowing property owners to select different styles, colors, and finishes that enhance their property’s overall look. Whether for residential or commercial properties, galvanized steel fences can be designed to complement existing architecture, adding value to the premises.

In conclusion, the advantages of galvanized steel fences make them an optimal choice for those seeking a combination of strength, durability, and aesthetic appeal. Their long lifespan, resilience against the elements, and economic benefits further reinforce their status as a leading fencing solution in the market.

Making the Right Choice: Steel vs Aluminum Fences

When evaluating the suitability of galvanized steel fences versus aluminum fences, several key factors emerge that can significantly influence your decision. Both types of fencing have their distinct advantages and can cater to different needs and preferences, making it essential to assess your specific situation.

First and foremost, budget considerations greatly impact your choice. Galvanized steel tends to be more affordable upfront, making it an appealing option for those seeking cost-effective fencing solutions. However, it’s important to account for long-term costs, such as maintenance. Steel fences generally require more upkeep, particularly when exposed to harsh weather conditions, as they may be susceptible to rusting unless properly coated. In contrast, aluminum fences, while typically higher in initial expense, offer a low-maintenance alternative due to their inherent resistance to rust and corrosion.

Next, the intended use of the fence plays a critical role in the decision-making process. For those prioritizing security, galvanized steel is often favored due to its strong and durable nature, making it difficult to breach. On the other hand, if aesthetics are more critical—such as in residential neighborhoods or decorative installations—aluminum fencing stands out due to its sleek appearance and versatility in design options.

Additionally, local climate conditions should not be overlooked. If you reside in an area with extreme weather fluctuations, galvanization can help steel withstand the elements when well-maintained. Conversely, aluminum’s lightweight nature contributes to its stability in windy regions, making it less prone to damage.

Ultimately, the choice between galvanized steel and aluminum fences hinges on individual preferences and requirements, incorporating factors such as budget, purpose, maintenance expectations, and environmental conditions. Understanding these facets will empower you to make an informed decision tailored to your fencing needs.

The Advantages of Hot-Dip Galvanizing at Command Factory

command fence — Fri, 10 Jan 2025 08:02:06 +0000

Overview of Hot-Dip Galvanizing

Hot-dip galvanizing is a well-established process used to protect steel and iron from corrosion through the application of a zinc coating. This method involves immersing metal components in a bath of molten zinc at temperatures typically around 450 degrees Celsius. The result is a metallurgical bond that forms between the zinc and the iron, leading to a significantly enhanced lifespan for the treated materials.

The importance of hot-dip galvanizing within the manufacturing industry cannot be understated. As industries grow and develop, the demand for materials that can withstand harsh environmental conditions is paramount. Hot-dip galvanizing provides a protective layer, ensuring that structures and components maintain their integrity over time, especially in outdoor applications.

Applications for hot-dip galvanized products are vast and varied. One notable sector is the fencing industry, where materials like chain-link fences, gates, and posts are often treated with this process. The galvanized finish not only improves the aesthetic appeal of these products but also promotes longevity, reducing the need for frequent replacements. This is particularly advantageous in regions where environmental factors, such as humidity or exposure to chemicals, may accelerate corrosion.

Moreover, the benefits of hot-dip galvanizing extend beyond mere appearance. The process creates a formidable barrier against rust and degradation, which translates into long-term cost savings for manufacturers and end-users alike. By choosing hot-dip galvanizing, companies can ensure that their products meet sustainability goals while simultaneously providing a robust solution to corrosion-related challenges. The durability afforded by hot-dip galvanizing makes it an essential choice for many applications across various industries.

Command Factory’s Unique Hot-Dip Galvanizing Pool

The Command Factory is recognized for its state-of-the-art hot-dip galvanizing pool, which plays a crucial role in the factory’s ability to provide high-quality surface protection for various metal products. This facility is designed to efficiently accommodate large-scale projects, enabling Command to serve a significant portion of the galvanized steel market in Anping County. With cutting-edge technology and extensive experience in hot-dip galvanizing, Kemande has established itself as a leader in the industry.

What sets Command apart from competitors is not only the scale of its hot-dip galvanizing pool but also the rigorous quality control measures and advanced techniques employed throughout the process. The facility is equipped with a technologically advanced galvanizing line that ensures a uniform coating thickness and enhanced adhesion of zinc to the steel substrates. This meticulous attention to detail results in durable, corrosion-resistant products, which are essential for manufacturers seeking longevity in their applications.

Approximately 70% of Anping’s fence manufacturers rely on Command for their hot-dip galvanizing requirements. This statistic underscores the factory’s reputation for excellence and its pivotal role within the local manufacturing ecosystem. By choosing Kemande, manufacturers benefit from reduced lead times and consistent quality, which are vital in maintaining competitiveness in the market. Over the years, the factory has built strong partnerships with local businesses, leveraging its pool’s capabilities to fulfill their specific galvanizing needs.

In summary, the combination of advanced technology, extensive capacity, and a proven track record makes Command Factory’s hot-dip galvanizing pool a cornerstone of the galvanizing industry in Anping County. Manufacturers looking for reliable and high-quality hot-dip galvanizing services will find a trusted ally in Command, ensuring their products meet the rigorous demands of today’s market.

Understanding the Two Phases of Hot-Dip Galvanizing

Hot-dip galvanizing is a pivotal process that ensures the longevity and durability of fence products by providing a protective zinc coating. This technique is broken down into two crucial phases: pre hot-dip galvanizing and post hot-dip galvanizing. Each phase contributes distinctly to enhancing the quality of the finished products.

The first phase, pre hot-dip galvanizing, involves preparing the metal substrate for the galvanizing process. This preparation is essential, as it directly impacts the adhesion of the zinc coating. The metal is first cleaned thoroughly to remove any surface contaminants, such as rust, oils, and dirt. Common methods include chemical cleaning and abrasive blasting. Following this, a flux solution is applied to the surface to prevent oxidation, ensuring that the zinc adheres properly during the immersion process. By investing time in this phase, manufacturers guarantee that the galvanizing process will yield optimal results, resulting in a more uniform and effective coating.

The second phase is post hot-dip galvanizing, which involves the actual application of the zinc coating. In this phase, the prepared metal parts are immersed in a molten zinc bath, where they undergo a chemical reaction that forms a metallurgically bonded zinc layer. This layer not only provides excellent corrosion resistance but also offers a tough and robust barrier against the elements. The environmental benefits associated with using hot-dip galvanizing are significant; it contributes to reducing maintenance costs and extending the service life of fence products. Furthermore, hot-dip galvanized items can be reused and recycled, aligning with sustainable practices in manufacturing.

Through understanding both phases of hot-dip galvanizing, stakeholders can appreciate how this process significantly enhances the performance and lifespan of galvanized products, adhering to quality standards while also mitigating economic and environmental impacts.

Benefits of Thick Galvanizing for Better Performance

Thick galvanizing provides a range of advantages that significantly enhance the performance and durability of steel products. The fundamental benefit of utilizing a thicker layer of protective zinc is the improved anti-corrosion properties it offers. When the galvanizing process involves a robust application, the protective zinc creates a more comprehensive barrier that better penetrates and adheres to the base material. This increased adhesion ensures that the underlying steel remains insulated from moisture, air, and other corrosive elements that can lead to deterioration.

Compared to standard galvanizing, which may deliver adequate protection but often falls short in endurance, thick galvanizing can ensure a substantial lifespan for structural components. In environments prone to harsh weather conditions or industrial pollutants, the superior thickness of the galvanization acts as a safeguard, extending the lifecycle of the product significantly. This is particularly important for projects where maintenance is costly or logistically challenging, as the long-lasting protection reduces the frequency of repairs.

Moreover, using thick galvanizing can lead to improved aesthetic appeal. The even coating can result in a smoother surface finish, which not only enhances the visual characteristics of the steel but also minimizes potential rust formation generated by surface imperfections. Furthermore, this approach is especially beneficial for manufacturers who prioritize quality and reliability in their products, thus making Command an ideal choice for such galvanizing needs. By selecting thick galvanizing, businesses stand to gain in performance, longevity, and overall cost-effectiveness.