China Road Marking Glass Beads - High-Quality Suppliers and Factory for Enhanced Traffic Safety
The following chemical composition values are typical reference ranges for soda-lime road marking glass beads. Actual values may vary slightly according to raw materials, production batch, customer standard, and customized grade. WANCHENG MINERAL can provide batch inspection documents according to customer requirements.
| Chemical Component | Typical Range | Function |
|---|---|---|
| SiO2 | 65-75% | Main glass network former |
| Na2O | 10-18% | Improves melting and glass formation |
| CaO | 5-12% | Improves hardness and stability |
| MgO | 0-5% | Improves durability |
| Al2O3 | 0-5% | Improves chemical stability |
| K2O | 0-3% | Auxiliary flux component |
| Fe2O3 | ≤0.5% | Controlled for appearance and transparency |
Silicon Dioxide (SiO2) is the primary component, constituting 65% to 75% of the formulation. It acts as the fundamental glass network former, providing structural integrity and optical clarity.
Iron oxide is tightly limited to 0.5% or less to prevent glass discoloration and preserve high transparency, ensuring optimal retroreflectivity for nighttime road marking visibility.
Calcium Oxide (CaO) and Magnesium Oxide (MgO) work together to enhance the physical hardness, compressive strength, and durability of the beads under continuous vehicular traffic.
Yes. Chemical ratios can be adapted within standard limits to satisfy regional transportation specifications, specific client standards, and customized road performance grades.
Yes, WANCHENG MINERAL provides comprehensive batch inspection documents and quality test reports upon request to verify chemical consistency and compliance.
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