15W2 Steel Grating Specifications (US & China Standard)
15W2 steel grating is a welded bar grating specification commonly used in industrial flooring and platform systems. Compared with 15W4, the 15W2 configuration features closer cross bar spacing, providing improved stability and load distribution.
As a professional bar grating manufacturer, we produce 15W2 grating panels in compliance with ASTM, NAAMM, and Chinese YB/T standards for global export projects.
1. What Does 15W2 Mean?
Under NAAMM Metal Bar Grating standards, 15W2 Steel Bar Grating follows this designation system:
- 15 = 15/16″ (0.9375″) bearing bar spacing (23.81 mm)
- W = Welded construction
- 2 = 2″ (50.8 mm) cross bar spacing
- Material: ASTM A36 carbon steel
- Surface: Plain or hot-dip galvanized per ASTM A123
The 2-inch cross bar spacing increases rigidity compared with 15W4, making 15W2 suitable for applications requiring improved panel stability.
2. China Equivalent Specification
The closest Chinese metric equivalent generally corresponds to:
G303/25/50 (approximate equivalent)
- 25 mm bearing bar spacing
- 50 mm cross bar spacing
- 3 mm bearing bar thickness (standard option)
- Material: Q235 carbon steel
- Standard: YB/T 4001.1 Steel Bar Grating
- Galvanizing: GB/T 13912
Since Chinese standards use metric dimensions, exact equivalency should be confirmed based on engineering drawings and load calculations.
3. Technical Comparison Table
| Specification Item | US 15W2 | China Equivalent |
|---|---|---|
| Bearing Bar Spacing | 15/16″ (23.81 mm) | 25 mm |
| Cross Bar Spacing | 2″ (50.8 mm) | 50 mm |
| Manufacturing | Welded | Welded |
| Material Grade | ASTM A36 | Q235 |
4. Applications of 15W2 Steel Grating
- Industrial platforms
- Mechanical equipment flooring
- Service walkways
- Maintenance access areas
- Trench covers with moderate load requirements
For higher load requirements, consider reviewing Heavy Duty Steel Grating options.
Conclusion
15W2 steel grating provides balanced open area and structural rigidity due to its 2-inch cross bar spacing. When exporting internationally, verifying material grade, spacing units, and galvanizing standards ensures full compliance with project specifications.
For complete cross-reference tables, refer to our Steel Grating Technical Specification PDF
Download Full Steel Grating Technical Specification (ASTM & China Standard).
