Expanded metal mesh foils are widely known to offer superior conductivity or resistivity while guaranteeing strength and light weight. These are made by converting heavy steel sheets and coils into an expanded mesh. The entire process of making expanded metal is made possible by an expanding system and this expanding unit has a knife that determines the shape or pattern of the mesh.
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Beyond a shadow of a doubt, you should never push toward including any expanded mesh for the sheer sake. It is important to remember that choosing the right type of expanded mesh for your construction expedition entails a number of factors.
First things first, you truly need to consider the material preceding investing in expanded mesh for your construction project. In light of everything, expanded mesh is available in a wide range of materials, including stainless steel, aluminum, and steel, to mention a few. The option you decide to settle on entirely depends on factors like strength requirements, vivacious preferences, and corrosion resistance.
Beside the material, you ought to likewise consider the expanded mesh size. As a matter of fact, the size of the diamond-shaped or hexagonal openings in the mesh determines its functionality. Smaller expanded mesh sizes tend to guarantee higher security and strength however may restrict visibility or airflow. Things tend to be different with larger expanded mesh sizes since they allow for far superior visibility and airflow yet sometimes penance a bit of security.
The thickness of the metal sheet utilized in creating the expanded mesh is likewise worth investigating prior to making this extremely important purchase decision for your construction project. All things considered, it affects its durability and strength. Thicker gauges are known to offer more strength however might be heavier and costlier. In this regard, you ought to consider the load-bearing requirements of your project while choosing the gauge.
As we conclude, you ought to likewise consider the intended application prior to buying an expanded mesh. Decide the specific purpose of the expanded metal mesh in your construction project; be it for fencing, screening, security, decoration, or structural support.
Also, factor in the environmental conditions the expanded mesh will be exposed to, like temperature fluctuations, weather, and chemical exposure. Attempt however much as could be expected find an expanded mesh material and finish that can withstand these conditions without deteriorating.
Since you have an insight into a portion of the things to factor in, why not get the ideal expanded mesh for your construction project?
Download our mesh measuring guide.
Understanding the precise measurements required for different types of expanded metal is essential for selecting the right mesh pattern. In this article, we provide a comprehensive guide on how to accurately measure and specify expanded metal.
Raised or flattened mesh, what is the difference?
When measuring expanded metal mesh, the first thing to consider is whether the mesh is raised or flattened. Each type has its own set of terminologies for measurement.
Expanded metal starts in a raised form due to the unique ‘slit and stretch’ manufacturing process, which creates angular strands inclined from the plane of the sheet.
Raised mesh is notable for its angular appearance, which not only enhances its aesthetic appeal but also provides practical benefits: it offers grip underfoot, directs air, liquid, and light, and serves as a key when used as a substrate.
Common applications for raised mesh include walkway ramps, security fencing, interior and exterior decorative building cladding, and laths for render and plaster.
A secondary process often flattens the raised mesh using heavy rolls, resulting in a completely two-dimensional sheet where all strands lie in the same plane. Flattened mesh is preferred when a smooth finish is desired.
Common applications for flattened mesh include security partition meshes, conical air filters, and machine guards.
How to Measure a Raised Mesh?
Key terminology for raised mesh is Longway Pitch (LWP), Shortway Pitch (SWP), Strand Width (SWDT) and Strand Thickness (STK).
LWP: Measured horizontally from either knuckle to knuckle or centre to centre, is derived from the size of tooling used within the production process.
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SWP: Measured vertically from either knuckle to knuckle or centre to centre, is manifested through the overall expansion applied during manufacture.
SWDT: A measurement of the width of the resulting angular strand created during manufacture.
STK: A measurement of starting raw material thickness. Contrary to belief, the expanding process does not directly alter material thickness. Strand Thickness should not be confused with the overall height or depth of expanded metal. Typically, mesh height can be as much as 1-2 times the measurement of SWDT.
How to Measure a Flattened Mesh
Key terminology for flattened mesh is Longway Aperture (LWA), Shortway Aperture (SWA), Strand Width (SWDT) and Strand Thickness (STK).
LWA: Measured horizontally from one internal aperture point to the next.
SWA: Measured vertically from one internal aperture point to the next.
SWDT: The width of the angular strand created during manufacturing.
STK: The thickness of the raw material before processing.
The expanding process does not alter the material thickness, but the flattening process does. You can expect a 10-20% reduction in material thickness after flattening.
After flattening, the mesh becomes completely two-dimensional. Therefore, the overall height measurement of the mesh will be similar to the starting material thickness, with an additional 10-20% reduction.
How do I specify sheet size and orientation?
Expanded metal mesh exhibits different mechanical and aesthetic properties depending on the sheet's orientation.
When specifying sheet dimensions, it is important to consider the orientation of the diamonds in relation to the sheet size. The terms used to describe this orientation are Longway Mesh (LWM) and Shortway Mesh (SWM).
For example, when raised mesh is used as a walkway ramp platform, the surface grip is strongest when the diamonds run left-to-right underfoot. Conversely, in the security fencing industry, expanded metal fencing panels are commonly mounted with the diamonds pointing upwards. This creates narrower openings and makes it more difficult to climb and scale the fence.
The illustration below shows how a mm (LWM) x mm (SWM) differs from a mm (LWM) x mm (SWM), despite having the same overall dimensions.
In conclusion, this article has provided a comprehensive guide on measuring and specifying expanded metal, covering both raised and flattened mesh types. It delves into the unique characteristics and applications of each, highlighting key measurements.
These measurements are essential for selecting the right mesh pattern for various purposes, from walkway ramps and security fencing to decorative cladding and industrial applications.
By understanding these metrics and considering the orientation of the mesh, readers can confidently choose expanded metal that best suits their specific needs. For visual clarity, refer to the accompanying illustration to understand the differences in mesh orientation.
View an example of our F flattened steel mesh at a horizontal orientation here and view the same mesh at a vertical orientation here. You can also view our raised steel mesh at a horizontal orientation here and at a vertical orientation here.
Contact us to discuss your requirements of Expanded Metal Mesh. Our experienced sales team can help you identify the options that best suit your needs.