Expanded Steel Gratings

General Introduction to Expanded Steel Grating

Expanded steel grating is a type of steel grating that has been expanded to create a diamond-shaped opening in the middle.

There are many types of expanded metal grating, but the most common is the raised expanded metal grating. This is made by cutting slits into a metal sheet and then stretching the sheet out to create a raised, grid-like pattern. Expanded metal grating is used in a variety of metal applications because it is strong, slip-resistant, corrosion-resistant, lightweight, and versatile. It is also easy to install, has an excellent load-bearing capacity, and has a very long lifespan.

Our expanded steel gratings allow air, sound, light, and heat to pass freely and can be used for heavy-duty fences, water treatment plants, bridge walkways, barrier construction, and industrial plant construction.

Expanded Steel Grating

Our Hot Selling Expanded Steel Gratings

SUNJ Grating is the best place to go for all your metal grating needs. We have over 15 years of experience and our team will be happy help you with any welding, shearing or cutting project that comes up!

Expanded Stainless Steel Grating

Provides a safe and slip-resistant surface, being easy to install and clean, and being able to withstand high temperatures; our expanded stainless steel grating can be used in both indoor and outdoor settings, making it a versatile product for home, commercial and industrial settings.

Expanded Carbon Steel Grating

Our Carbon Steel Grating is extremely strong and durable. It is also greatly versatile and can be used in a wide range of metal applications. Additionally, expanded carbon steel grating is also very affordable, making it an excellent grating option for anyone on a limited budget. Besides, you can choose between hexagonal and diamond as per your liking.

Expanded Galvanized Steel Grating

Expanded galvanized steel grating is ideal for a high-humid environment as it provides the most resistance to corrosion. This grating is used in a variety of applications, including flooring, walkways, and drainage covers. Our expanded galvanized steel grating is known for its strength, durability, slip resistance, and ability to provide ventilation and drainage.

Why choose Expanded Steel Grating From Chinagaring.Com?

ChinaGratings gives you countless reasons to choose expanded steel gratings for metal applications. They are strong and durable, lightweight as well as easy to install, clean and maintain. They are also slip-resistant and fire-resistant. Expanded steel gratings are an excellent choice for many applications.

We manufacture our expanded steel gratings using the latest technology, ensuring that we provide the best quality possible.

Our expanded steel gratings are used for many purposes, including industrial and commercial applications and residential construction projects such as catwalks, maintenance platforms, elevated walkways, security fencing, industrial stairs, window protection, and doors.

Expanded steel gratings are manufactured from carbon steel, aluminum steel, galvanized steel, or stainless steel, increasing their durability and corrosion resistance by reducing their weight and increasing their strength. They also have a higher degree of flexibility than regular steel grating, so they can be installed anywhere without causing damage to the surrounding area.

Our expanded steel gratings come in various designs, so they’ll fit your needs perfectly. We can even make custom grating sizes if you need them!

Expanded Steel Grating

Types of Expanded Steel Gratings

Standard Expanded Steel Grating

Our regular expanded metal grating is also known as “Raised expanded metal grating” due to its unique die-cut raised surface, which is formed by the process of slitting and stretching metal sheets.

This type of expanded metal grating features a diamond opening with a rough surface and increased rigidity, making it ideal for industrial applications with limited public contact but a need for high strength.

They are available in different materials; carbon steel, aluminum, or stainless steel. Besides, you can also choose between different gauges, opening sizes, fabrications and finishes.

Expanded Steel Grating
Expanded Steel Grating

Expanded Steel Catwalk Grating

This Expanded Metal Grating is specially designed for catwalks and serves as the most economical and lightweight alternative to traditional maintenance platforms and catwalks.

It is manufactured using the best metals, such as carbon steel, stainless steel, aluminum, or galvanized steel. This metal sheet undergoes a stretching and slitting process to achieve ultimate rigidness, strength, corrosion resistance, and load-bearing capacity.

Our Expanded Metal Catwalk grating is available in Hexagonal and Diamond designs with different opening sizes. Besides, you can also choose between different fabrication and finishes to get the most reliable grating for your residential, commercial, or industrial settings.

Flattened Expanded Steel Grating

We have engineered flattened expanded metal gratings to fulfill the need of a wide array of architectural and industrial settings with a lot of human or animal traffic. It is suitable for making metal guards, fences, panels, grilles, screens, walkways, etc.

We have produced these gratings by reducing the thickness of the metal sheet and stretching it through a cold-roll reduction mill process. This gives a strong, durable, flat, even diamond surface.

Our flattened expanded steel grating is economical, extremely versatile, durable, and easy to install, clean, and maintain.

This type of expanded steel grating is available in different opening sizes, gauges, and materials.  

Expanded Steel Grating

The Process Flow & Duration Estimation for Expanded Steel Gratings

Step 1: Design Consultation

Our design experts have a detailed conversation with the client to determine their application needs, whether they want to use our grating as a ramp, catwalk, walkways, platform, or something else.

The design direction, expended metal type, percentage of open area, opening shape, primary material, product size, form and quantity, finishing, style, accessories, and any special requirements are also considered. 

 This design and consultation process usually takes 1 to 2 days.

After the order details are finalized, the client has to pay an upfront amount and sign a contract agreement to confirm the order.

Design Consultation for steel gratings
Steel gratings raw material

Step 2: Raw Material Preparation

After the order is confirmed, our dedicated team sources high-quality raw materials from our reliable, sustainable, eco-friendly suppliers. The raw material is then thoroughly inspected to meet international quality standards. The raw material procurement process usually takes 1 to 2 days.

Step 3: Manufacturing of Expanded Steel Gratings

The manufacturing process of expanded steel grating varies from type to type.

For Example, raised expanded steel grating is manufactured using a slitting and stretching process. This process involves a die with upper and lower jaws. The metal sheet is passed between the jaws to slit and stretch the sheet to form a uniform diamond pattern.

In contrast, Flattened expanded steel grating is produced by passing a metal sheet between the rollers in a rolling mill.

After expanded steel gratings are manufactured, they are coated with the required finishing and applied with edge treatment.

Besides, other metal plates are also cut and welded on the grating’s borders.

This process usually takes 5 to 8 days.

Dimension check for steel gratings
Packing of gratings

Step 4: Finalizing and Inspecting the Product

Once expanded steel grating panels are complete, necessary cuts and holes are punched into it for screws that are required in installing the grating.

Finally, the QC team thoroughly inspects each grating panel to ensure it’s flawless and meets our quality standards.

This step usually takes three days.

Step 5: Shipping

After inspection, our expanded steel gratings are adequately packed with high-grade packaging material to avoid damage during transportation. Each grate is wrapped with a plastic film for packing, then placed in a crate or box. The empty space inside the box are filled with Styrofoam to prevent grating movement and damage. The box is then taped and labeled with shipping details. 

The packaging process usually takes one day, while shipping can take 5 to 45 days, depending on the client’s location and shipping method.

Stainless steel grating|China Stainless steel grating|Stainless steel grating manufacturer

The Advantage Of Our Expanded Steel Grating

Highly Versatile

Highly Versatile and Aesthetically Appealing and Pleasing.


Slip-Resistant, Corrosion-Resistant, Long-Lasting, and Durable.

Allows ample amount of light

Allows ample amount of light, air, sound, and heat.

Easy to Install

Easy to install, clean, and maintain.

Quality Certification of Expanded Steel Grating

The application of Expanded Steel Gratings

Expanded steel gratings are used in various applications due to their excellent resistance to corrosion, durability, and load-bearing capacity.

They are typically used in industrial environments, such as in boiler factories, petroleum engineering projects, municipal construction projects, power plants, catwalks, and maintenance platforms.

They can also be used for architectural Settings where there are high chances of metal coming into contact with humans or animals.

The expanded steel gratings also allow free passage of air, light, heat, and sound, making it ideal for screening, ventilation covers, security partitions, infill and fencing panels, and catwalks. Besides, they can also be used as metal guards, grilles, shelves, ramps, greenhouses, and cages.

Expanded Steel Grating from China Gratings has been used in countless metal applications across Singapore, the United States, Spain, Japan, Britain, Australia, Netherlands, New Zealand, Malaysia, and Thailand.

FAQs for Expanded Steel Gratings


ChinaGratings offer a range of metals to manufacture Expanded Steel Gratings, including Carbon Steel, Stainless Steel, Aluminum Steel, and Galvanized Steel. We can also use other metals like Titanium, Nickle, Silver, and Copper on the customer’s demand.

A: The percentage of open area or the size of an open area determines the amount of air, water, light, and sound the grating will allow to pass through. Besides, the open area size also changes the look of the grating. Therefore, this percentage should be decided according to the application.

A: ChinaGratings offer Expanded Steel Gratings in a wide array of material, patterns, thickness, sizes, and surface finishes. Therefore, the price for each type varies. Communicate your requirement, application, quantity, and budget to us at ChinaGratings.com to get the most competitive price for our products.

A: Expanded Steel Gratings by ChinaGratings meet many international quality standards for which we have acquired their respective certifications. The most significant one is the ISO 9001 certification. This certification means that the manufacturer has a quality management system in place that meets the requirements of the International Organization for Standardization. Some of the other most common certifications for our expanded metal gratings include the American National Standards Institute (ANSI), American Society for Testing and Materials (ASTM) International, and the European Commission (CE). These certifications ensure that expanded metal gratings meet all the necessary safety and quality standards.

A: As the demand for our expanded metal gratings continues to grow, we at ChinaGratings are constantly looking for ways to improve our quality control. We are doing this by using computer-aided design (CAD) and computer-aided manufacturing (CAM) technologies. These technologies allow us to create detailed designs and then produce them with a high degree of accuracy. This results in expanded metal gratings that are more consistent and superior in quality and easier to install.

There are a few other ways that we, as an expanded steel grating manufacturer, use to control the quality of our products. First, we use higher quality raw materials. Second, we use better manufacturing processes. And third, we do more quality control testing. By doing these things, we ensure that our products are of a higher quality and will meet international quality standards and the needs of our customers.

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SUNJ Grating is the best place to go if you need metal gratings! We have over 15 years of experience and our team will be happy to help with any steel gratings needs.
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