Understanding the Different Types of Metal Grating

Posted by Boyd Metals on May 9, 2018

Sorting out which type of grating you should use for your project can be difficult. In order to make that decision easier, we have detailed the different types of metal grating. We include information about how they are manufactured, their characteristics, and the typical uses for each.

When using the term “grating” there are several different types of metal products that one could be referencing. Each type has its own set of properties that make it more (or less) ideal given the individual application. For street drains and other grills, you might consider a form of bar grating. For steps and walkways, you’ll want to use a safer form of expanded grating or grip strut. Regardless of the application, grating allows for proper drainage and ventilation. Which is why it is widely used in multiple industries. 

In order to get a fuller picture of all the different types grating available, we've comprised for you this list of grate information.

Expanded Metal Grating

Expanded metal grating is made by creating slits in a metal sheet, and then stretching (expanding) the sheet, resulting in a diamond pattern. The sheet can then be cut to size and flattened. Many different types of metals can be expanded such as stainless steel, carbon steel, aluminum and more.

How Expanded Metal is Made

The process of expanding is very economical as it creates no waste. Also, because there are no holes punched out of the material, the sheet will retain its structural strength. Typical uses for expanded metal grates include steps, flooring, fences, and security applications.

Bar Grating

Bar grating is made up of parallel bars that are connected together with perpendicular bars. The bars are most commonly connected through welding, however, there are other ways of joining the bars together. Alternatives include riveting, close meshing, press-locking and more. The most economical method of joining is determined by the materials being used and the thickness of the bars.

Bar GratingBar grating can be made out of a variety of different materials but is most commonly made from steel or aluminum. It has a very high ratio of strength-to-weight and a lot of open space, making it a widely used option for industrial flooring. However, it is also used for things such as fire escapes, street drains, bridges, and more.

Safety Grating

Safety grating is a common form of metal grate that is used for walking surfaces. It is designed to help increase traction and prevent the risk of slips or falls. It is typically made with small diamond shaped protrusions that allow for greater traction. It also has a lot of open surface providing plenty of drainage and air flow.

The most common form of safety grating helps to increase grip when walking across it. This is achieved by serrating the edges of the diamonds that are created after cold stamping a metal sheet.Safety Grating

Many different types of metals are used to create grip strut including steel and aluminum. Once it has been stamped and serrated, the metal sheet is then coated with a material that minimizes slipping. Because of its high level of traction, it is used for things such as walkways, stairs, and a slew of different platforms.

Other Types of Grating

Other common types of grating include:

  • Wire Mesh - A metal wire screen that can either be welded together or woven like a cloth. It is easy to install, very durable, and is adaptable to many different applications.
  • Perforated Metal - Made from a sheet that is put through a machine which punches out holes in a specified pattern. The removed metal can then be recycled. It is used for many things such as screens, filters, and much more.

If you are looking for grating for your project, Boyd Metals has the products that you need. Check out our list of industrial products

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  • Specifications for industry standard products
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