I-type steel grating, also known as I-shaped steel grating, is a steel grating product which uses "I"-shaped load-bearing bars as the main load-bearing material. The cross-sectional shape of the I-type load-bearing bar is similar to the letter "I", with a thinner middle part and wider upper and lower sides.Opt for lightweight and economical I-bar steel grating without compromising on load-bearing strength.Support extreme loads in industrial zones with our robust heavy duty steel grating engineered for maximum durability.
I-bar steel grating is a lighter and more economical option compared to traditional flat bar steel grating. The I-shaped bearing bars provide equal strength to rectangular bars while reducing weight. Suitable for both commercial and industrial applications, I-bar grating is available in carbon steel, galvanized steel, or stainless steel, offering a combination of high strength and lightweight durability.
Specification:
| Steel Grating |
| No. | Terms | Description |
| 1 | Material | Low carbon steel, mild steel, stainless steel |
| 2 | Material standard | GB700-88,ASTM(A36),BS4360(43A),AS3679 |
| 3 | Bearing bar size | 25x3,25x4,25x4.5,25x5,30x3,30x4,30x4.5, 30x5, 32x5,40x5,50x5,65x5.75x6,75x10.....100 x10mm etc; I bar size: 25x5x3,30x5x3,32x5x3,40x5x3 etc; US standard: 1"x3/16", 11/4”x3/16", 1 1/2”x3/16", 1"x1/4",1 1/4"x1/4", 1 1/2"x1/4",1"x1/8", 1 1/4"x1/8", 11/2"x1/8" etc |
| 4 | Bearing bar pitch | 12.5,15,20,23.85,25,30,30.16,30.3,32.5,34.3,35,38.1,40,41.25,60,80mm etc. US standard:19-w-4,15-w-4, 11-w-4,19-w-2,15-w-2 etc |
| 5 | Cross bar pitch | 38.1,50,60, 76,80,100,101.6, 120mm, 2" & 4" etc |
| 6 | Surface treatment | untreated(black), hot-dipped galvanized ,powder coated,electroplate, painting or as per customers' requirement |
| 7 | Grating standard | YB/T4001.1-2007,ANSI/NAAMM(MBG531-88),BS4592 1987,AS1657-1985 |
| 8 | Bearing bar type | FLAT BAR / I-BAR / SERRATED BAR / SERRATED I-BAR |
| 9 | Application | Floor, walkway,industrial platform,stair tread,metal ceiling |
| 10 | Feature | Fine appearance,anti-corrosive,simple installation,light weight, high load,anti-skid,Prevent dirt deposition,ventilation,anti-explosion |
| 11 | Payment terms | T/T |
| 12 | Package | Pallets in containers packed by steel strap and worthy sea shipping,or according to customers' requirement |
| 13 | Delivery time | 15 days for a 20GP container |
| 14 | Remarks | Other sizes also can be customized according to customers' requirement |
Why Choose I Bar Steel Grating?
Lower panel weight: I-shaped bearing bars help reduce steel consumption and handling weight compared with many conventional flat-bar designs.
Open-grid design: Supports drainage, ventilation, light transmission, and easier removal of loose debris.
Practical for fabricated steelwork: Suitable for cut-outs, edge banding, non-standard panel sizes, and project-based fabrication.
Material flexibility: Available in carbon steel, galvanized steel, or stainless steel according to corrosion and service-environment requirements.
Plain or serrated surfaces: Select a smooth surface for general access areas or serrated bearing bars where improved slip resistance is required.
Multiple pitch options: Bearing bar and cross-bar spacing can be selected according to access, drainage, heel-safety, and project specification requirements.
Typical Applications
I Bar Steel Grating is commonly specified for:
Industrial working platforms
Plant maintenance walkways
Steel structure access floors
Equipment service platforms
Stair treads and landings
Pump rooms and utility areas
Water treatment and drainage access areas
Power plant and substation walkways
Factory mezzanines
Metal ceiling and architectural grid applications
For wet, oily, dusty, or higher-slip-risk environments, serrated I-bar grating may be a more suitable option. For vehicle traffic, exceptionally long spans, or high concentrated loads, please request a review of heavy-duty grating alternatives.
Select the Right Grating Type for Your Project
| Product Type | Best For | Main Consideration |
|---|
| I Bar Steel Grating | Platforms, walkways, access systems, and weight-sensitive steelwork | A lighter grating solution for applications confirmed by project load and span requirements |
| Flat Bar Steel Grating | General industrial flooring, platforms, trenches, and stairs | A broadly used option for standard industrial grating applications |
| Serrated Bar Steel Grating | Wet, oily, dusty, or safety-sensitive pedestrian surfaces | Provides additional traction through serrated bearing-bar edges |
| Heavy Duty Steel Grating | Vehicle areas, heavy equipment zones, high loads, and demanding spans | Requires load, span, support, and application confirmation before selection |
Material and Surface Options
Mild Steel I Bar Grating
A cost-effective option for indoor or controlled environments. It can be supplied untreated, painted, powder coated, or hot-dip galvanized depending on the required corrosion protection.
Hot-Dip Galvanized I Bar Grating
Recommended for outdoor structures, humid environments, industrial plants, utility areas, and applications requiring longer-term corrosion protection.
Stainless Steel I Bar Grating
Suitable for applications that require enhanced corrosion resistance, hygiene, or compatibility with demanding operating environments. Please specify the required stainless steel grade and project standard.
Plain Surface
A standard surface choice for dry and general industrial access areas.
Serrated Surface
Designed for locations where additional slip resistance is required, such as wet walkways, oily platforms, exterior stairs, or process areas with frequent contamination.