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Steel Grating

 While traditional specifications for bar grating originated with flooring applications, the flexible nature of these products combined with the creativity of architects and engineers has led to innumerable alternative applications for bar grating. Non-flooring applications for bar grating include architectural as well as security grilles and screens, drainage trench and pit covers, machinery safety guards, racks and shelving, scaffolding, fences, trash and wash racks as well as OEM components.


 For more than 80 years, metal bar grating has been the predominant choice among open metal flooring products. Features that make bar grating the preferred product include:

 Appropriate Materials – Manufactured from carbon steel, aluminum, stain- less steel and specialty alloys, bar gratings provide safe, durable and functional products for nearly all environments.

 High Percentage of Open Area – Typically ranging from 50 to 80 percent, this allows for the unhindered passage of light, air and liquids, thereby reducing the costs for lighting, ventilation and fire suppression.

 High Strength-to-Weight Ratio – Designed for maximum efficiency, metal bar gratings are capable of supporting loads ranging from light pedestri- an traffic to the heaviest vehicular and aircraft loads.

 Product Flexibility – Metal bar grating and stair treads can be shop or field fabricated to suit the exact configuration of your applications.

 Economy – In most cases the grating is shop fabricated to fit the contours and intricacies of each job, with the finish applied prior to arriving at the jobsite. Once anchored in place, the floor is immediately ready for service, thereby minimizing costly field labor.

Maintenance-Free – The high percentage of open area allows for excellent drainage and the free passing of debris, thus creating a virtually mainte- nance-free surface. 

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Product Details


Mild steel grating is available in many different types and profiles, economic and strong with superior spanning capabilities. Mild steel grating is typically supplied with a plain surface but a serrated surface is also available on our most common mild steel grating products.
Our Mild steel grating products along with all our grating products are manufactured in accordance with AS/NZS 1657 for fixed platforms, walkways and stair.
Mild steel grating load bars are manufactured from steel that complies to AS/NZS 3679.1.2010 G300 or equivalent. 
Patterns Available:


Black (untreated / raw) finish (U)
Hot dip galvanised to meet the requirements of AS/NZS 4680 (G)
Powder coated finish (P)
Steel grating Ltd can supply stock sheets of steel grating any length up to 5800mm span for clients to do their own fabrication but we typically supply a fully fabricated surface to meet your requirements.
Load charts:
Please click on the links below to see the loading c
harts for mild steel grating
Load bar direction (span)
It is important to check the load bar direction (span) when ordering mild steel grating as it needs to be supported in a specific way. The load bars are the flat bars standing on their edge in which the grating is manufactured from, the supports need to be at 90° (perpendicular) to the load bar direction.

Standard sheet sizes:
Series 1 grating: 995mm (wide) x 5800mm (span)
Series 2 grating: 1005mm (wide) x 5800mm (span)
Series 3 grating: 965mm (wide) x 5800mm (span)
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