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| Conventional Grating Specifications | ||||||
|---|---|---|---|---|---|---|
| Bear Bar (mm) | Cross Bar (mm) | Bearing Bar Spacing (mm) | Cross Bar Spacing (mm) | Width (mm) | Length (mm) | |
| 20x3 | 5x5 / 6x6 / 8x8 | 30 * 34 * 40 | 38 * 50 * 100 | 993 | 6000 or custom | |
| 20x5 | 5x5 / 6x6 / 8x8 | 30 * 34 * 40 | 38 * 50 * 100 | 995 | 6000 or custom | |
| 25x3 | 5x5 / 6x6 / 8x8 | 30 * 34 * 40 | 38 * 50 * 100 | 993 | 6000 or custom | |
| 25x5 | 5x5 / 6x6 / 8x8 | 30 * 34 * 40 | 38 * 50 * 100 | 995 | 6000 or custom | |
| 30x3 | 5x5 / 6x6 / 8x8 | 30 * 34 * 40 | 38 * 50 * 100 | 993 | 6000 or custom | |
| 30x5 | 5x5 / 6x6 / 8x8 | 30 * 34 * 40 | 38 * 50 * 100 | 995 | 6000 or custom | |
| 32x3 | 5x5 / 6x6 / 8x8 | 30 * 34 * 40 | 38 * 50 * 100 | 993 | 6000 or custom | |
| 32x5 | 5x5 / 6x6 / 8x8 | 30 * 34 * 40 | 38 * 50 * 100 | 995 | 6000 or custom | |
| 40x3 | 5x5 / 6x6 / 8x8 | 30 * 34 * 40 | 38 * 50 * 100 | 993 | 6000 or custom | |
| 40x5 | 5x5 / 6x6 / 8x8 | 30 * 34 * 40 | 38 * 50 * 100 | 995 | 6000 or custom | |
| 50x3 | 5x5 / 6x6 / 8x8 | 30 * 34 * 40 | 38 * 50 * 100 | 993 | 6000 or custom | |
| 50x5 | 5x5 / 6x6 / 8x8 | 30 * 34 * 40 | 38 * 50 * 100 | 995 | 6000 or custom | |
| Country / Region | Manufacture Standard | Bearing Bar Standard | Cross Bar Standard | Stainless Steel Standard |
|---|---|---|---|---|
| China | YB/T 4001.1-2019 | GB/T 700 Q235 Q235B | GB/T 700 Q235 | ASTM A240 GR304(L) / GR316(L) |
| USA | ANSI/NAAMM (MBG531-00) | ASTM A1011 CS Type B / ASTM A36 | ASTM A510 | ASTM A240 GR304(L) / GR316(L) |
| British | BS4592 | BS EN 10025 | BS EN 10025 | BS EN 10258 |
| Germany | DIN24537-1 | DIN EN 10025 | DIN EN 10025 | DIN EN 10088 |
| Australia | AS1657 | BS EN 10025 | BS EN 10025 | BS EN 10258 |
| Standard Region | Standard Code | Material Thickness (mm) & Min. Average Thickness (μm) | ||
|---|---|---|---|---|
| 1.6 ≤ t ≤ 3.2 | 3.2 ≤ t ≤ 4.8 | 4.8 ≤ t ≤ 6.4 | ||
| China | GB/T 13912 | 3 ≤ t ≤ 6 | Min. Average Thickness: 70 μm | ||
| USA | ASTM A123 / A123M | 65 μm | 75 μm | 75 μm |
| Unit Conversion |
mils = μm × 0.03937 |
oz/ft² = μm × 0.02316 |
g/m² = μm × 7.067
|
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Load-carrying bars made from steel strip or slit sheet or from rolled or extruded aluminum, extending in the direction of the grating span.
The connection bars, made from steel strip, slit sheet, or rolled bars, extending across and perpendicular to the bearing bars. They are bent into a corrugated/sinuous pattern and welded, forged, or mechanically locked at intersections.
The center-to-center distance between adjacent bearing bars.
The center-to-center distance between adjacent cross bars.
A flat bar welded to a side or end of a grating panel, or along the line of a cutout, extending neither above nor below the bearing bars.
Also called a kick plate. A flat bar attached to the outer edge of the grating or rear edge of a stair tread, projecting above the surface to form a protective lip or curb.
Refers to the total span dimension of the steel grating panel.
The overall dimension of the grating panel measured normal (perpendicular) to the bearing bars.
Our steel grating products comply with major global production standards, including China (YB/T 4001.1-2019), USA (ANSI/NAAMM MBG531-00), British (BS4592), Germany (DIN24537-1), and Australia (AS1657).
Yes. In addition to our standard configurations (bear bar sizes from 20x3 up to 50x5), custom bearing bar thicknesses, cross bar sizes, and custom panel lengths/widths can be manufactured to your project drawings.
We adhere to ASTM A123/A123M and GB/T 13912 standards. Minimum average galvanized zinc thickness ranges from 65 μm to 75 μm depending on steel thickness, and thicker coatings can be provided upon request.
We offer carbon steel grades such as GB/T 700 Q235/Q235B, ASTM A36 / ASTM A1011 CS Type B, BS EN 10025, and stainless steel options including ASTM A240 GR304(L) and GR316(L).
Bearing bars are the primary load-bearing bars aligned along the direction of the grating span, whereas cross bars are perpendicular connector bars welded or mechanically locked to the bearing bars to ensure lateral stability.
Yes, flat band bars and toe plates can be welded flush or projecting above edges and cutouts to satisfy safety barrier and industrial platform compliance requirements.
