Ri 1.9
Category: Road Traffic Products Line
Detailed introduction
By using high-refractive-index optical glass (RI > 1.9), the product achieves highly reflective performance. Compared to traditional glass-bead markings, it offers significantly higher reflectivity, with a reflection visibility range that meets the distance requirements for aircraft pilots during takeoff and landing. This product is suitable for road markings in a wide variety of application scenarios and can be applied using conventional construction methods and equipment with all types of marking paints.
Application areas
For areas requiring enhanced road markings and meeting special requirements—such as airports, ship decks, landing strips, sharp highway curves, zebra crossings, schools, hospitals, and others—road markings with higher retroreflective coefficient levels are necessary.
Product Features
- Using high-refractive-index optical glass (Ri > 1.9) results in higher reflectivity compared to conventional road markings.
- The markings have a longer visibility range and a wider application scope, making them suitable for various scenarios and all types of marking paints.
- The surface is smooth, has good fluidity, and is easy to work with.
Technical Parameters
| Product Name | High-Refraction (RI 1.9) Glass Bead Series for Road Surfaces |
| Brand | Brilliance |
| Appearance | Slightly yellow or pale yellow transparent sphere |
| Refractive index | 1.9 |
| Particle size range | 20-50 mesh |
| Density | 4.2 ± 0.1 g/cm³ |
| Roundness | ≥85% |
| Defect rate | ≤20% |
| Standard | It can meet various national standards, such as GB/T24722, FS TTB-1325D type III, KS2521, JS3301, EN1423, EN1424, and more. Customized products with different particle size ranges are also available based on users’ specific requirements. |
| Package | 25 kg/paper drum |
Specifications of Ri 1.9 glass beads:
| National Standard No. 1 |
| 20-50 mesh |
| TTB-1325D Airport Beads |
Application scenarios




Keywords: Ri 1.9
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