Hot DIP Galvanized Steel Grating for The Flooring
What Is Steel Bar Grating?
Steel bar grating with high strength and firm structure is manufactured from carbon steel, aluminum steel, or stainless steel. Based on manufacturing methods, it is categorized into four types: welded, press-locked, swage-locked, and riveted gratings. According to surface shapes, it can be divided into smooth and serrated gratings. With various styles and sizes available, steel gratings are widely used in everyday applications such as stair treads, walkways, platforms, floors, various covers, wheeled equipment, security screens, heavy-duty constructions, and more.
Product Parameters
| Material Standard |
Bearing Bar |
Cross Bar |
Bearing Bar Pitch |
Cross Bar Pitch |
| Q235 |
25mm×3mm |
5mm |
20mm |
50mm |
| 25mm×5mm |
22mm |
|
| 30mm×3mm |
|
|
| Q345 |
30mm×5mm |
27mm |
6mm |
30mm |
| 32mm×3mm |
|
|
| 32mm×5mm |
31mm |
|
| ASTM A36 |
35mm×5mm |
|
|
100mm |
| 40mm×3mm |
|
|
| 40mm×5mm |
|
|
| ASTM A1011 |
50mm×5mm |
8mm |
32mm |
|
| 60mm×5mm |
|
|
| 60mm×8mm |
34mm |
|
| SS400 |
75mm×5mm |
40mm |
|
|
| 75mm×8mm |
|
|
Surface Finish
We provide four finishes for anti-corrosion treatment of carbon steel bar grating:
- Black / Bare Steel: No finish, life is very short, but the price is the cheapest.
- Painted Coat: The anti-rust effect is general and can be any color.
- Electro-galvanized: A small amount of zinc coating, easy to cause slight corrosion in humid environment.
- Hot-dip galvanized: The most commonly used method to provide the best anti-rust effect, strictly in accordance with ASTM A123 or GB/T 13912-2002.
Due to discoloration during welding and manufacturing, stainless steel bar grating usually requires a second cleaning:
- Stainless steel pickling passivation: Soak the entire stainless steel grating in the stainless steel pickling passivation solution, provide a uniform silver-white matte surface.
- Stainless steel electrolytic polishing: The stainless steel grating is immersed in the electrolytic solution that is energized and heated to 75 degrees for 1-3 minutes, can obtain a bright stainless steel surface.
Application Scenarios
Frequently Asked Questions
What are the common surface finishes?
Plain, hot-dip galvanized, electro-galvanized, painted, or powder-coated.
Where is steel grating commonly used?
Used in walkways, platforms, stair treads, drainage covers, industrial flooring, and catwalks.
Is steel grating slip-resistant?
Yes, serrated grating or coated finishes improve slip resistance.
Can steel grating be used outdoors?
Yes, especially galvanized or stainless steel grating, which resists corrosion.
How long does galvanized steel grating last?
Typically 15-30 years depending on environment and maintenance.
Is steel grating fire-resistant?
Yes, steel grating is non-combustible and suitable for high-temperature applications.
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