0102030405
China Suppliers Factory for KFRP Strength Members in Optical Cables – Lightweight, High Strength Reinforcement
Product Introduction
Optical cable reinforcement is an important component of optical cable, generally placed in the center of the optical cable, its role is to support the optical fiber unit or optical fiber bundle, improve the tensile strength of the optical cable. Traditional optical cables use metal reinforcements. Non-metal reinforcement parts with their own light weight, high strength, corrosion resistance, long life advantages are more and more used in various optical cable.
KFRP fiber cable reinforcement core (aramid fiber) is a new type of high performance composite material, which is made by pultrusion process after mixing resin as matrix material and aramid fiber as reinforcement material. KFRP cable reinforcement core (aramid fiber) overcomes the defects of traditional metal cable reinforcement parts, in addition to excellent corrosion resistance, lightning resistance, electromagnetic field interference, high tensile strength advantages, than GFRP glass fiber reinforcement core flexibility is stronger, not easy to break, can better protect the fiber, especially suitable for direct introduction from outdoor indoor occasions, It is widely used in inlet network and indoor wiring.
KFRP Features & Advantages
(1) Compared with GFRP, KFRP has lower density, lighter weight, higher tensile strength and modulus than GFRP, low extension, low expansion, and wide temperature range;
(2) Non-metallic materials are not sensitive to electric shock, lightning protection, excellent insulation performance, free from electromagnetic interference, suitable for lightning, rainy climate environment;
(3) Chemical corrosion resistance, compared with the metal core, the KFRP reinforced core will not produce gas caused by the chemical reaction between the metal and the ointment and affect the fiber transmission performance;
(4) The cable with KFRP reinforced core can be installed next to the power line and the power supply device, and will not be interfered by the induced current generated by the power line or the power supply device;
(5) KFRP has excellent flexibility, better bending performance than GFRP, is not easy to be broken, stable size, easy to process and lay, can make indoor cable structure compact and beautiful, especially suitable for access network and complex environment small space wiring;
(6) Impact resistance and fracture resistance, KFRP reinforced core has ultra-high tensile strength, after being accidentally broken, its tensile strength remains above 1300MPa, the modulus remains unchanged, and it will not puncture the protective sleeve and damage the optical fiber.
KFRP Round Core Specifications
Diameter range: (Φ0.40 ~ Φ5.00mm)
Standard diameter Φ (in mm): Coated and uncoated
| Noumenon | 0.40 | 0.50 |
|---|---|---|
| Coating | 0.45 | 0.58 |
Standard length:
- Diameter (0.40mm ~ 3.00mm) Standard delivery length ≧25km
- Inkjet meter
- Non-standard diameter and non-standard length can be produced according to user requirements
Packaging & Storage

KFRP reinforced core - Packaging (Plastic cable tray)
KFRP reinforced core - Storage
- (1) The cable tray shall not be placed in a flat position and shall not be stacked high;
- (2) Disc reinforcement core shall not be made long distance rolling;
- (3) Shall not be subjected to collision, crushing and any mechanical damage;
- (4) Prevent moisture and long-term exposure, and prohibit long-term rain;
- (5) Storage and transportation temperature range: -40°C ~ +60°C;
Technical Parameters
| Test item | Unit (or condition) | Technical parameter | |
|---|---|---|---|
| Diameter tolerance | Noumenon | mm | ±0.03 |
| Coating | mm | ±0.03 | |
| Out-of-roundness | Noumenon | % | ≤5 |
| Coating | % | ≤5 | |
| Tensile strength | MPa | ≥1600 | |
| Tensile modulus of elasticity | GPa | ≥52 | |
| Minimum bending property | / | Bending radius 10D, surface no cracks or burrs, no break, no disintegration, feel smooth | |
| High temperature bending property | 80℃, 24h | Bending radius 10D, surface no cracks or burrs, no break, no disintegration, feel smooth | |
| Low temperature bending property | -40℃, 24h | Bending radius 10D, surface no cracks or burrs, no break, no disintegration, feel smooth | |
Note: For coated KFRP, only the diameter deviation and non-roundness of the coating are considered, not the diameter deviation and non-roundness of the body.

Frequently Asked Questions
What is a KFRP fiber cable reinforcement core?
It is a new type of high-performance composite material made from resin as a matrix and aramid fiber as a reinforcement material, formed through a pultrusion process.
What are the main advantages of KFRP over traditional metal reinforcements?
KFRP is lightweight, has high tensile strength, offers excellent corrosion resistance, is immune to electromagnetic interference, and provides better flexibility than GFRP glass fiber.
Is KFRP suitable for areas with frequent lightning?
Yes. Because it is a non-metallic material, it is not sensitive to electric shock, offers excellent insulation, and provides superior lightning protection.
What is the standard delivery length for KFRP round cores?
For diameters between 0.40mm and 3.00mm, the standard delivery length is at least 25 kilometers, though custom lengths can be produced upon request.
How should KFRP reinforced cores be stored?
They should be stored upright (not flat or stacked high) in a temperature range of -40°C to +60°C. They must be protected from moisture, rain, long-term sun exposure, and mechanical damage.


