Types of Steel Bar Grating

What does Steel Bar Grating is?

Also known as bar grating or just Grating, which is produced through the electroforged process. This consists in welding steel cross rods to perpendicular and equidistant bearing bars. This is achieved through high current and high mechanical pressure discharges, fusing the molecular elements of both components without placing filler material, as it occurs in the arc welding process. The forged welding process guarantees an homogeneous product of high quality and resistance.

The standard panel is normally made of 34 bearing bars.

Several Types of Steel Bar Grating exist, each of them satisfy different construction purposes:

  • Heavy Duty Grating, commonly used at airports and in  heavy transit locations.
  • Stainless Steel Grating, it is mainly used in food industry plants and sulfate or acid environments.
  • Galvanized Steel Bar Grating, ideal for any type of use, its finish ensures a longer lifespan of up to 60 years.
  • AAR M-1003, grating used for running boards in the railroad industry. Manufacturer must fulfill certification.
  • Architectural Grating, used in residential, urban and commercial projects as faÁ§ades, benches, balconies, fences, tree guards and as many other applications.

Quality and durability of the materials used in a construction project are important, but so is its design. Custom Fabricated Grating is an excellent alternative to ensure specific cuts and aesthetic, but also facilitates installation.

No matter what your project is, Steel Bar Grating is a good option to reduce costs and maximize durability due to the different applications that features. Seek a good installation avoiding The 4 most common mistakes in Steel Bar Grating Installation.

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Steel Bar Grating Certifications

Any project should ensure quality in its construction materials. Quality is so important to client satisfaction  that steel bar grating manufacturing companies seek to obtain fabrication process certifications in order to supply the highest possible quality.

These certifications are established by international organizations whose objective is to standardize requirements throughout the world regarding quality management:

    ISO 9001 certification guarantees national and international clients that its manufacturer meets the required quality standards and regulations by the market.
    Laboratorio de Pruebas Equipos y Materiales is a Federal Electricity Commission organization in Mexico that aims to address the needs of the power sector nationally and internationally. LAPEM Certification allows the manufacturing companies to provide galvanized products and services to the Commission.
  • AAR M-1003
    The Association of American Railroads in its specification M-1003 Section J for quality assurance, points out the requirements to be met for reliable suppliers of the AAR. AAR M-1003 Certification enables companies to provide Steel Bar Grating running boards to the rail industry.

Steel Bar Grating Manufacturing Companies should also consider being members of specific associations that are committed into best practices:

    Since 1938 the National Association of Architectural Metal Manufacturers has represented a wide variety of architectural metal products for building construction. Its objective is to contribute manufacturing companies specific technical standards promoting quality in the market.
    Stands for Mexican Association of Galvanizers. It is a nonprofit organization whose main objective is to promote and develop a galvanizing culture in the country. Hot Dip Galvanizing offers great benefits to steel products, if you wish to learn more about the importance of the galvanizing process, we suggest reading Benefits of Galvanized Steel Structures.

A high quality product flattered by the international market appears whenever the manufacturer understands that it has to be certified in its production processes and also joins as a member in the previously mentioned associations.

Several Types of Steel Bar Grating exist, each one of them has different characteristics in order to satisfy the necessities of the desired covered area. Their functionalities vary depending on the possible loads, uses and environments in which the grating is going to be installed.

If you know any other certification or membership, and believe that it should be included in this article , please contact us.

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How to Protect Steel against Corrosion

When it comes to protection of corrosion to iron or steel, the answer is galvanization. A Steel Structure normally suffers reparation, scratches or is rewelded in certain areas (after being galvanized). These usually contaminate the whole piece. A fastest and easiest way to protect these areas is adding layers of Zinc Paint.

This rich zinc coating is also known as Cathodic Paint Protection. Its main objective is to stop oxidation through a self-sacrifice mechanism, preventing oxidation in areas where previous coatings were damaged.

When properly formulated, it guarantees protection and prevents additional expenses of further coatings to steel surfaces that are exposed to corrosive environments. This is achieved through the use of a very fine zinc dust that is dispersed in a binder (normally one type of resin) completing an electrochemical cell when applied on steel.

How to apply it? Since rich zinc paints have to be in direct contact with steel you have to clean the desired area to be protected. During the cleaning process, is recommended to sandblast the area to ensure the removal of remaining paints or rust. Otherwise, impurity acts as a non-conductor affecting the proper adhesion and protective action of paint into steel.


Zinc Paint should be applied in the structure immediately after being sandblasted. It can also be sprayed. Make sure that the selected brand of paint offers triple protection (short and long term, and against abrasion) and that’s it, once again you have protected steel from corrosion.

Applying Zinc Paint on Structural Steel such as Steel Bar Grating ensures high protection and abrasiveness.  You can learn more of the Benefits of Galvanized steel Structures.

Share your zinc painting experience with us! If you have any further question, feel free to do so, we will be glad to help you.

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Achieving Resistance and Safety on Industrial Floorings

When planning large projects such as industrial plants, commercial buildings or offices, you usually seek to obtain the highest quality in every single aspect. Personnel transiting during operation requires a safe working environment. In this article, we’ll explain how to achieve greater Resistance and Safety on Industrial Flooring.

Industrial Flooring should be designed to withstand some of the following types of loads:

  • Pedestrian Transit
  • Vehicular Transit
  • Specific Point Loads

It is highly recommended that at the beginning of the project, both, constructor and industrial flooring contractor (oil platforms , water treatment plants , chemical plants , bridges , airports , power plants, livestock facilities), request the necessary information that will help them to guarantee security and quality to working areas.

Budget is probably the most important variable to consider when choosing the product to be used as Industrial Flooring . For this decision, you must take into account the initial cost, maintenance costs and service life.

When thinking of substituting solid floorings, Steel Bar Grating is a great choice to replace them. Common cases:

  • Areas requiring the flow of: light, heat and sound
  • High vibration areas
  • Areas that should not accumulate gases or liquids
  • Antiskid flooring
  • Easy installation
  • Adaptability to complex patterns of the future covered area (Custom Fabricated Grating)
  • High ratio Load-Weight
  • Nonmagnetic, non-sparking and corrosion resistant flooring (Hot Dip Galvanizing)

It is important to notice that Steel Bar Grating offers its maximum resistance only if it is properly installed. Therefore we recommend reading Top 4 common mistakes in Steel Bar Grating Installation, to ensure a longer life to your project.

Share your Steel Bar Grating Installation experience with us! If you have any further question, feel free to do so, we will be glad to help you.

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4 most common mistakes in Steel Bar Grating Installation

Steel Bar Grating

ensures better performance than other type of Industrial Floorings in industrial and Architectural Projects. Its functionality depends directly on its installation. When this is not carried out in a good way, its durability, strength and aesthetic are normally affected.

After the assembly, is common to identify installation mistakes. Since reparation is expensive, the key is to avoid them being cautious in small details.

We have enlisted the 4 most common mistakes in Steel Bar Grating Installation, so we expect you to take this into account in your next Grating project.

1.- Bearing bars pointing at wrong direction

 sentido equivocado


The key to avoid this mistake relies on the bearing bars. They must point out to the shortest distance of the desired covering space. When this is done wrongly, cross rods normally bend down triggering a poor loading capacity. A well placed Trench Drain is safe for pedestrians, and acts as an extension of the street for heavy transit.

2.- Missing banding on bearing bars edges

Solera de Remate Ausencia de solera de remate

It is important to include banding on the grating edges to avoid unnecessary welding and broken edges. Banding also helps transferring burden to unloaded bearing bars assuring the grating´s capacity.

3.- Placing the Steel Grill upside down

Parrila Boca arriba Parrilla de Acero boca abajo

As shown in the picture , it should face the side in which the load will be received, same side in which cross rods can be seen.  In the contrary, you run the risk of bending or breaking the bearing bars, causing loss of loading capacity, and making it dangerous to those who transit over it.

5.- Unaligned cross rods

 Desalineación de alambrones

Proper cross rods alignment shows professionalism of who installed it. Gives better appearance, and helps transferring load evenly throughout the piece. To avoid this mistake, we suggest asking your supplier for Custom Fabricated Grating.

These are the 4 most common mistakes in Steel Bar Grating Installation. We hope our guidance will help you to obtain the best of grating on your projects. Reduce unnecessary costs from product replacements, and ensure its functions for many years.

Do you know any other installation mistake? Tell us about it, leave your comments at the end of this article.

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Benefits of Galvanized Steel Structures

Hot-Dip Galvanizing is an industrial finishing process that provides corrosion protection to steel structures. By immersing structures in a bath of 450 °C molten zinc, structures adhere several layers of zinc extending its life for many more years. This process is the maximum corrosion protection for any product made of steel, is a coating used in both commercial and industrial sectors.

This process is safe, guarantees and provides full protection to any structure since zinc is not only deposited on surface, but also achieves a resistant zinc-iron alloy becoming the whole an homogeneous piece.

Other benefits of subjecting Steel Structures into Hot Dip Galvanizing are the following:

Longer life of service: depending on the exposure to corrosive agents, a hot dip galvanized structure can last between 30 and 60 years.

Costs reduction: once galvanized, the structure needs no further painting or maintenance.

Versatility: once the process is capable of protecting a wide range of products in size and shapes.

Warranty: since the processed structure is completely immersed, coating is ensured inside and outside.

Triple protection: physical, electrochemical and self-curing improvement; offering a greater resistance to knocking, scratches and abrasion.

Satiny look: its modern and glossy finish is more attractive to many consumers.

As additional feature, galvanized steel is recyclable and inexpensive.

If you want to learn how to protect mistreated galvanized structures, read our article Protect Steel against Corrosion in 5 minutes.

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