High Visibility Glass Beads for Road Marking - Retroreflective Glass Spheres for Thermoplastic Road Paint | AASHTO Standard
Road marking glass beads are manufactured from glass sand and recycled glass materials. Through high-temperature melting processes, these materials form small spherical glass beads that appear colorless and transparent under microscopic examination, with diameters ranging from 75 to 1400 microns. The primary production method for reflective glass beads is the flame floating process.
These glass beads serve two main functions in road marking applications: as premixed materials to ensure continuous reflectivity throughout the marking's lifespan, and as surface-applied materials during construction to provide immediate reflective properties.
Available Standards
- Chinese Standard: GB / T 24722 - 2009 No.1, 2, 3
- Korea Standard: KSL 2521 No.1 and 2
- British Standard: BS6088 Class A and B
- American Standard: AASHTO M247 type 1 and type 2
- European standard: EN1423 and EN1424
- Turkish Standard: TS EN1423
- New Zealand Standard: NZS2009: 2002
- Taiwan Standard: CNS
- Japanese standard: JIS R3301
- Australian Standard: A, B, C, D
Size Specifications
| Type |
Mesh |
Max Microns (μm) |
Min Microns (μm) |
| 30# | 20-40 | 850 | 425 |
| 40# | 30-40 | 600 | 425 |
| 60# | 40-60 | 425 | 300 |
| 80# | 60-100 | 300 | 150 |
| 100# | 70-140 | 212 | 106 |
| 120# | 100-140 | 150 | 106 |
| 150# | 100-200 | 150 | 75 |
| 180# | 140-200 | 106 | 75 |
| 220# | 140-270 | 106 | 53 |
| 280# | 200-325 | 75 | 45 |
| 320# | >325 | 45 | 25 |
Quality Parameters
| Project |
Quality |
| Chemical Composition SiO₂ | >72% |
| Chemical Composition CaO | >8% |
| Chemical Composition Na₂O | <14% |
| Chemical Composition MgO | >2.5% |
| Chemical Composition Al₂O₃ | 0.5-2.0% |
| Chemical Composition Fe₂O₃ | 0.15% |
| Refractive Index | Nd≥1.5% |
| Density | 2.4-2.6g/cm³ |
| Size Distribution | Oversize ≤5% under size ≤10% |
Frequently Asked Questions
Are you a factory?
Yes, we are a coating & abrasive OEM&ODM factory with 21 years of manufacturing experience.
What types of coatings does your company offer?
We offer a wide range of coatings including acrylic, road marking paint, polyurethane, and latex paints, suitable for various applications from residential to industrial.
What colors are available for your coatings?
We offer a comprehensive color palette with custom color matching services to meet your specific color requirements.
How about the price?
We can offer the best wholesale price which depend on the quantity of the order.
What's your MOQ (min order quantity), production period and delivery time?
Our MOQ is 25 Kg. We accept mixed order and the production period and delivery time are 7-15 days.
Can the packaging be customized?
We support customized packaging and customized logo.
Are your coatings environmentally friendly?
We offer environmentally friendly coatings that comply with industry standards for low VOC (volatile organic compounds) and eco-friendly formulations.