- Sketch
- Structure
- structural parameters
- Cable performance
- Application
- Fiber properties
- Color-coded
- Other information

Compared with ordinary optical cables, flame-retardant detection optical cables for coal mines have the following advantages in places prone to fire, such as coal mines:
1. Flame retardant performance: Flame retardant detection optical cables for coal mines have good flame retardant performance, which can effectively resist the high temperature caused by fire, reduce the risk of fire transmission and spread, and improve safety.
2. Good high temperature resistance: In high temperature environments such as coal mines, flame retardant optical cables can maintain stable performance and are not easily deformed or melted by heat, ensuring the normal operation of optical fiber transmission systems.
3. Wear resistance: Due to the harsh working environment of coal mines, flame retardant optical cables for coal mines usually have strong wear resistance, which can resist the wear of optical cables by coal dust, sand and gravel and other materials, and extend the service life.
4. Good corrosion resistance: Flame retardant optical cables are usually made of corrosion-resistant materials.
Note: The outer sheath material, color and printing information of the optical cable can be customized according to the requirements of customers.

The structure from inside to outside is:
Optical fiber: 0.6/0.9mm tight-buffered optical fiber × 1 core;
Spiral steel tape armor: OD 1.7mm;
Aramid fiber: 1 strand × 1100D;
Metal woven mesh: 3(6)×16 spindles;
Aramid fiber: 4 strands × 1100D;
Optical cable outer sheath: high thermal conductivity, anti-static, high flame retardant sheath.
| Cable type | Unit | DJ-GYFJK(B)V-1S | ||
| Fiber size | mm | 0.60/0.90±0.05 | ||
| Inner sheath material | / | PVC / LSZH | ||
| Outer diameter of armor pipe | mm | 1.70±0.10 | ||
| Aramid fiber | Detex | 1100 | ||
| Braid size | mm | 2.10±0.10 | ||
| Sheath outer diameter | mm | (2.85/3.20)±0.10 | ||
| Sheath material | / | polyvinyl chloride (PVC) | Low Smoke Zero Halogen (LSZH) | |
| Temperature range | ℃ | -20~+70 | -40~+85 | |
| Cable weight | Kg/km | 18 | ||
| Bending radius | mm | Dynamic 20D Static 10D | ||
| Tensile | N | Long-term 600 Short-term 800 | ||
| Crush | N/10cm | Long term 3000 Short term 5000 | ||
![]() | anti-rat bite | √ | ![]() | anti-twist | √ |
![]() | oil field | √ | ![]() | Tensile | √ |
![]() | wind energy | √ | ![]() | the pipeline | √ |
![]() | world | √ | ![]() | direct burial | |
![]() | oil tank | ![]() | Overhead | ||
![]() | subway, tunnel | √ | ![]() | water blocking | |
![]() | coal mine | ![]() | fire protection | √ |
| Optical cable model | unit | DJ-GYFJK(B)V-1S |
| Fiber size | mm | 0.60/0.90±0.05 |
| Fiber material | / | PVC / LSZH |

| 聯絡方式/CONTACT | |||
| 手機/微信號 Mobile phone/WeChat ID | 177 6800 0800 竇先生 業務總監 / Mr.Dou Business Director | ||
| 180 1075 7228 李女士 業務經理 / Ms.li Business Manager | |||
| What’s app | +86 180 1075 7228 | Skype | +86 180 1075 7228 |
| Linkedln | DJ Optical Technology | Line Id | djoptical2024 |
| 信箱/Email | djmt@djopticals.com | 電話/Phone No. | 0512-6655-8801 |














