Welded steel bar grating is a load-bearing grid produced by resistance-welding bearing bars to perpendicular cross bars, then
hot-dip galvanizing the whole assembly for long-term corrosion resistance. GNEE STEEL supplies it in carbon steel, stainless
steel, and aluminum, with plain, serrated, and I-bar profiles, for platforms, walkways, stair treads, drainage covers, and
industrial flooring.
Steel grating
Steel bar grating is one of the most efficient structural solutions for industrial flooring, catwalks, and drainage because it
combines high strength with open area that lets light, air, and water pass through. The bearing bars carry the load; the cross
bars hold the grid rigid. After fabrication the grating is submerged in molten zinc, producing a metallurgical bond that
protects both the bars and the welds. This makes hot-dip galvanized grating suitable for outdoor and corrosive environments
where painted steel would fail quickly.
Materials and Surface Treatment
GNEE STEEL offers gratings in carbon steel (the most common and cost-effective), stainless steel (for hygiene and chemical
resistance), and aluminum (for lightweight, non-sparking applications). Surface options include hot-dip galvanizing, spray
painting, polishing, and powder coating. For most outdoor and industrial uses, hot-dip galvanizing is the default because it
covers edges and welds that other coatings miss.
Bearing Bar Types
- Plain (flat) bar: smooth surface, easiest to walk on, good for general flooring.
- Serrated bar: raised teeth improve slip resistance on ramps and oily floors.
- I-bar: lighter than flat bar at equal height, reducing weight and cost.
-
Common specification
|
Common specification |
||
|
Bearing bar pitch (mm) |
Cross bar pitch (mm) |
Bearing bar size |
|
30 |
100 |
WSG_203/253/323/403/205/325/405/455/505/555_30_100 |
|
|
50 |
WSG_203/253/323/403/205/325/405/455/505/555_30_50 |
|
40 |
100 |
WSG_203/253/323/403/205/325/405/455/505/555_40_100 |
|
|
50 |
WSG_203/253/323/403/205/325/405/455/505/555_40_50 |
|
60 |
50 |
WSG_203/253/323/403/205/325/405/455/505/555_60_50 |
Products Description
Welded bar grating
Welded bar grating is also called metal open bargrating. Welded bar grating, also known as metalopen bar grating, comes in two types: smoothand serrated. Smooth, or plain steel bar grating, ismore popular, but serrated grating offers betterskid resistance.
Press Lock Grating
Made from low carbon steel, stainless steel, oraluminum, is created by bonding slotted barsunder hydraulic pressure. It's strong, durable, andwidely used in industrial and commercialapplications like stair treads, platforms,walkways, and covers. Serrated surfacesenhance anti-slip properties.
Swage Locked Grating
Swage locked grating, mainly made of aluminumor stainless steel bars, is formed by insertingcross bars into pre-punched bearing bars andlocking them under hydraulic pressure. It comesin three bearing bar types: rectangular, T, and Ibars, with I bars being lighter and moreaffordable.
Surface treatment
1.Pickling
High-grade steel grating is typically pickled afterproduction to remove scale and discoloration caused bywelding, which can lead to corrosion. During the picklingprocess, the grating is submerged in a bath that cleansesthe surface, leaving it metallically pure and corrosion-resistant.
2.Hot dip galvanizing
Hot-dipped galvanized steel grating involves submergingthe steel grating in molten zinc, a process calledgalvanization. This forms a strong metallurgical bondbetween the zinc and the steel, resulting in a durable,corrosion-resistant protective layer.
3.Powder coating
Powder coating is a cost-effective, durable way to colorgrating. The process includes degreasing, pickling, zinc-phosphating, and electrostatic powder application, thenbaking at 180°C. For enhanced corrosion protection, thiscoating combines hot-dip galvanizing with powder coating.Available in all RAL colors, with different gloss levels andtextures.
Features & Characteristics
Durability: Constructed from high-quality carbon or stainless steel, ensuring long-lasting performance in demanding environments.
Load-Bearing Capacity: Engineered to support heavy loads, making it ideal for industrial applications such as factories and warehouses.
Slip-Resistant Surface: Features a textured surface that enhances safety by reducing the risk of slips and falls.
Customizable Sizes: Available in various sizes and spacing options to meet specific project requirements and applications.
Optimal Drainage: Open design allows for effective water drainage and air circulation, reducing the risk of pooling and enhancing hygiene.
Application Scenarios
GNEE STEEL's qualifications
Case Studies of GNEE STEEL
From China to Qatar: Reliable Steel Grating Supply by GNEE STEEL!
FAQ
1.What is the difference between welded and pressed steel grating?
Welded grating has bearing and cross bars welded; pressed grating uses pressure-locked joints.
2.Is maintenance required for steel grating?
Minimal maintenance is needed; periodic cleaning and inspection are recommended.
3.Can steel grating resist chemicals?
Stainless steel or coated grating offers resistance to many chemicals.
4.Is steel grating recyclable?
Yes, steel grating is 100% recyclable and environmentally friendly.
5.How is steel grating priced?
Pricing depends on material, panel size, thickness, and finish.
6.Can steel grating be used in corrosive environments?
Yes, galvanized or stainless steel grating is ideal for corrosive conditions.
7.Are there standards for steel grating?
Yes, such as ASTM A36/A1011 for carbon steel and ASTM A123 for galvanizing.
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