Shanga za Kioo Zinazoakisi Mwanga kwa Alama za Barabarani
Shanga imara za kioo ndizo zinazofanya alama za barabarani kung’aa usiku — hunyunyiziwa kwenye alama ikiwa bado moto ili kurudisha mwanga mara moja, au huchanganywa ndani ya nyenzo ili mstari uendelee kuakisi unapochakaa. Bidhaa hii imetengenezwa kukidhi mahitaji ya BS 6088 Class B, ikiwa na mipako ya kuzuia unyevu au ya flotation kwa ombi.
- JINA LA BIDHAAShanga za kioo zinazoakisi mwanga kwa alama za barabarani
- UFUNGASHAJI25 kg / gunia
- MADARAJABS 6088 Class B (za kunyunyiziwa juu)
- NYENZOKioo cha soda-lime kisicho na rangi — SiO₂ ≥ 70%
- FAHIRISI YA UVUNJIKAJI WA MWANGA≥ 1.50
- MIPAKO YA USOMpako wa kuzuia unyevu (M) / mpako wa flotation (F) — hubainishwa wakati wa kuagiza
- MAHALI ILIPOTOKAChina
- MATUMIZIHunyunyiziwa kwenye alama ikiwa bado moto
Mahitaji ya BS 6088B
“BS 6088B” inamaanisha Class B — daraja la kunyunyiziwa juu — la BS 6088:1981, kiwango cha Uingereza cha shanga za kioo. Nchini Uingereza na EU kilibadilishwa na BS EN 1423:2012 mwaka 2013, lakini Mashariki ya Kati, Asia ya Kusini-Mashariki na Afrika bado ni msimbo wa biashara unaotumika katika zabuni na karatasi za data. Majedwali yaliyo hapa chini yananukuu mahitaji ya kiwango chenyewe.
Two jobs, two classes
Retroreflection works like this: headlight beams enter the exposed crown of a bead sitting in the line, refract inside the glass, reflect off the bead–paint interface and return toward the driver. BS 6088 splits beads by where they sit in that system:
| Class | Role | Trade name |
|---|---|---|
| Class A | Mixed into the thermoplastic at the factory — exposed layer by layer as the line wears, keeping it reflective for life | Premix / intermix beads |
| Class B | Spread onto the freshly laid hot line or wet paint — embeds in the surface and reflects from the moment the road reopens | Drop-on / surface beads |
| Class C | Peening, plastic reinforcement and other industrial uses | Industrial beads |
The two road classes pair with the British thermoplastic standard: BS 3262 calls for premix beads to BS 6088 Class A when the line must reflectorize, with Class B dropped on during application. The classes are not interchangeable — A is deliberately coarser and lives inside the material; B is sized to embed about half-deep in the surface.
Class B gradation — Table 2 of the standard
| Sieve size | Retained, % by mass |
|---|---|
| 850 μm | 0 – 5 |
| 600 μm | 5 – 20 |
| 300 μm | 30 – 75 |
| 180 μm | 10 – 30 |
| passing 180 μm | 0 – 15 |
The working range is 180–850 μm with the bulk at 300–600 μm — big enough to sit proud of the coating and form a reflecting crown, small enough to embed and stay put. Note the table is written as retained per sieve, not cumulative passing: the two formats give completely different numbers, and misreading one as the other is the most common mistake when auditing a datasheet. For comparison, the premix grade (Class A, Table 1) runs coarser: 0–3% retained at 1.18 mm, 5–20% at 850 μm, 65–95% at 425 μm, 0–10% passing 425 μm.
Bead quality — beyond the sieve
| Property | Class A (premix) | Class B (drop-on) |
|---|---|---|
| Spherical beads, minimum | ≥ 70% | ≥ 80% |
| Defective beads, maximum | ≤ 30% | ≤ 20% |
| Refractive index | ≥ 1.50 | ≥ 1.50 |
| Magnetic particles | ≤ 0.1% | ≤ 0.1% |
| Glass | colourless soda-lime silicate — SiO₂ ≥ 70%, CaO + MgO ≥ 8% | |
Drop-on roundness is set tighter than premix because the sphere shape of a surface bead directly drives the initial night-time brightness. Defective beads — ovals, twins, shards, milky or bubbled glass — are counted under the microscope. The standard also proves durability with four chemical-resistance tests: water, acid and calcium chloride exposure must leave the bead surface without haze or dulling, and a sodium sulphide bath must not darken the beads — a simple screen against high-lead recycled glass, which turns black on contact.
Coatings, and how to order
Class B beads can carry two buyer-specified surface treatments: M, a moisture-proof coating that keeps the beads free-flowing through the dispenser in humid transit and storage, and F, a flotation coating that helps the bead sit at the right depth in the wet coating. A complete order code reads “BS 6088 Class B (M)” or “(M+F)”. A clean tender clause looks like this:
“Glass beads shall conform to BS 6088:1981 Class B, with moisture-proof coating (M); roundness ≥ 80%; refractive index ≥ 1.5; gradation as per Table 2 of the standard.”
In practice, hot-applied thermoplastic takes a drop-on rate around 400–500 g/m² and cold paint 250–450 g/m², with the bead embedded 50–60% of its diameter for best return — useful working figures, but they are industry practice, not clauses of BS 6088, so state your project’s own rate in the contract.
BS 6088B, EN 1423, AASHTO M247 — which to cite
| BS 6088:1981 Class B | BS EN 1423:2012 | AASHTO M247 | |
|---|---|---|---|
| Status | Superseded in UK/EU, still the global trade code | Current UK/EU standard (CE/UKCA route) | Current US standard — M 247-26 since 2026 |
| Gradation | Fixed table in the standard (180–850 μm) | Declared by the manufacturer | Fixed tables, Type 1–4 |
| Refractive index | ≥ 1.50, one class | Three classes: ≥ 1.5 / ≥ 1.7 / ≥ 1.9 | ≥ 1.50 (Type 1/2) |
| Roundness | ≥ 80% | Declared per its own annex | ≥ 70% |
| Heavy metals | No ppm clause (Na₂S test screens lead glass) | As / Pb / Sb each ≤ 200 ppm | Per project / federal add-ons |
The BS 6088B band (180–850 μm) overlaps closely with M247 Type 1 — they are effectively the British and American write-ups of the same size class, with BS 6088B holding the stricter roundness. One caution for 2026 contracts: AASHTO revised the bead standard to M 247-26, so name the year rather than writing “latest M 247”. EU or UK projects should be quoted against EN 1423 instead — the same product can satisfy both, but the paperwork differs. Tell us which code your tender cites and we quote against that text.
Kutoka Mstari Wetu hadi Bandari Yako
- Magunia ya 25 kg yasiyopenywa na unyevu — PP iliyofumwa au karatasi yenye tabaka la ndani, magunia 40–48 kwa paleti; magunia makubwa ya 1 t yanapatikana kwa ombi.
- Yanawekwa alama kulingana na kiwango — BS 6088, daraja, msimbo wa mpako (M / F), uzito halisi, namba ya bechi na tarehe ya uzalishaji kwenye kila gunia, vikilingana na COA ya bechi.
- Kila bechi hupitishwa na maabara yetu ya ndani — uchambuzi wa chekecheke, hesabu ya shanga za mviringo na mwonekano — kabla ya kupangwa kwa ajili ya kupakiwa.
- Husafirishwa kutoka Bandari ya Qinzhou — Asia ya Kusini-Mashariki kwa siku 5–15, Afrika na Amerika kwa wastani wa siku ~30. Masharti ya biashara ya EXW / FOB / CIF.
- Hupakiwa pamoja na agizo lako la rangi — shanga na thermoplastiki katika kontena moja, usafirishaji mmoja, seti moja ya nyaraka.
Inaoana na
Maswali ya Ununuzi
Q-01BS 6088 shows as “superseded” — can I still buy against it?
Yes. BS 6088:1981 was replaced by BS EN 1423:2012 inside the UK and EU, but across the Middle East, Southeast Asia and Africa it remains the specification tenders actually write. If your project cites BS 6088 Class B, we supply and certify against that text; if it needs the EN route, we quote EN 1423 with the manufacturer declarations it requires.
Q-02What is the difference between Class A and Class B beads?
Class A is the coarser premix grade, blended into the thermoplastic at the factory and exposed as the line wears — it carries the long-term reflectivity. Class B is the finer drop-on grade, spread onto the hot line during application for instant brightness. A reflectorized line normally uses both, and they are not interchangeable.
Q-03Do you supply coated beads?
Yes — moisture-proof (M) coating to keep the beads free-flowing in humid climates, and flotation (F) coating for controlled embedment, alone or combined. State the coating code in your order; uncoated premix beads for AASHTO M249 material are also in the catalog.
Q-04Which trade terms do you support?
We can provide EXW, FOB, CIF services, etc.
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