Stranded Loose Tube Non-metallic Strength Member Non-armored Fiber Optic Cable

The structure of stranded loose tube non-metallic strength member non-armored fiber optic cable is to put 250μm optical fiber into a loose tube made of high modulus material, and the loose tube is filled with waterproof compound. The center of the cable core is an FRP, and the loose tube (and filling rope) are twisted around the FRP to form a compact and round cable core. The gaps in the cable core are filled with water-blocking fillers. A layer of polyethylene sheath is squeezed outside the cable core to form a cable.

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Product Description

The Stranded Loose Tube Non-metallic Strength Member Non-armored Fiber Optic Cable consists of 250μm optical fibers inserted into loose tubes made from high-modulus material, filled with waterproof compound. The cable core is centered on a non-metallic FRP strength member, around which the loose tubes and fillers are helically stranded to form a compact, round core. Water-blocking fillers occupy any gaps, and an outer polyethylene sheath protects the cable structure.

Key Features

Strong mechanical and temperature performance
Loose tube material with high hydrolysis resistance and tensile strength
Special tube filling compound for critical fiber protection
Crush resistance combined with flexible design for installation
Comprehensive watertight measures: FRP central member, tube filling compounds, 100% core filling
Standards compliance: YD/T 901 and IEC 60794-1

Technical Specifications

Optical Fiber Count: Multiple configurations available (e.g., 6-144 fibers)
Fiber Type: Single-mode or multimode 250μm
Loose Tube Material: High-modulus polymer
Filling Compound: Water-blocking gel
Strength Member: Non-metallic FRP rod
Outer Sheath: Polyethylene (PE)
Operating Temperature: -40°C to +70°C
Minimum Bending Radius: 20× cable diameter (under load)

Applications

These cables are widely used in:

Telecommunications operators for backbone and access networks
Radio and television signal transmission systems
Local area network (LAN) data transmission
Industrial front-end connections in power, rail, and highway projects
Other large-scale engineering and infrastructure projects

Advantages

Durable non-metallic design reduces corrosion risk and makes the cable lighter
Compact stranded structure improves tensile strength and flexibility
Water-blocking materials ensure high reliability in humid or wet environments
Compatibility with various installation methods, including ducts and aerial deployment
Proven performance across domestic and international projects, supported by Orientalfiber’s manufacturing experience

FAQ

Q: Can this cable be used in outdoor installations?: A: Yes, the PE sheath and water-blocking compounds make it suitable for direct burial and duct deployment outdoors.
Q: How many fibers can be configured?: A: The cable can be customized from 6 to 144 fibers depending on project requirements.
Q: Does the cable include metallic components?: A: No, the strength member is non-metallic FRP, minimizing weight and corrosion issues.
Q: Is it compatible with standard optical equipment?: A: Yes, the 250μm fiber and standard loose tube design ensure compatibility with conventional splicing and termination methods.

Standards

GYFTY cable complies with Standard YD/T 901 as well as IEC 60794-1

Structure Drawing

1.Fibre

2.Tube Filling Compound

3.Loose Tube

4.Cable Filling Compound

5.FRP Strength Member

6.PE Sheath

Stranded Loose Tube Non-metallic Strength Member Non-armored Fiber Optic Cable

Technical Parameters

Cable Type (Increased by 2 fibres)	Fibre Count	Tubes	Fillers	Cable Weight (Ref) (kg/km)	Tensile Strength Long/Short Term (N)	Crush Resistance Long/Short Term (N/100mm)	Bending Radius Static/Dynamic (mm)
GYFTY-2~6Xn	2~6	1	5	86	400/1000	300/1000	12.5D/25D
GYFTY-8~12Xn	8~12	2	4	86
GYFTY-14~18Xn	14~18	3	3	86
GYFTY-20~24Xn	20~24	4	2	86
GYFTY-26~30Xn	26~30	5	1	86
GYFTY-32~36Xn	32~36	6	0	86
GYFTY-38~48Xn	38~48	4	2	109
GYFTY-50~60Xn	50~60	5	1	109
GYFTY-62~72Xn	62~72	6	0	109
GYFTY-2~6Xn	2~6	1	6	98	600/1500
GYFTY-8~12Xn	8~12	2	5	98
GYFTY-14~18Xn	14~18	3	4	98
GYFTY-20~24Xn	20~24	4	3	98
GYFTY-26~30Xn	26~30	5	2	98
GYFTY-32~36Xn	32~36	6	1	98
GYFTY-38~42Xn	38~42	7	0	98
GYFTY-44~48Xn	44~48	4	3	115
GYFTY-50~60Xn	50~60	5	2	115
GYFTY-62~72Xn	62~72	6	1	115
GYFTY-2~6Xn	2~6	1	7	119	1000/3000
GYFTY-8~12Xn	8~12	2	6	119
GYFTY-14~18Xn	14~18	3	5	119
GYFTY-20~24Xn	20~24	4	4	119
GYFTY-26~30Xn	26~30	5	3	119
GYFTY-32~36Xn	32~36	6	2	119
GYFTY-38~42Xn	38~42	7	1	119
GYFTY-44~48Xn	44~48	8	0	119
GYFTY-50~60Xn	50~60	5	3	125
GYFTY-62~72Xn	62~72	6	2	125
GYFTY-74~84Xn	74~84	7	1	125
GYFTY-86~96Xn	86~96	8	0	125
GYFTY-98~108Xn	98~108	9	1	149
GYFTY-110~120Xn	110~120	10	0	149
GYFTY-122~132Xn	122~132	11	1	179
GYFTY-134~144Xn	134~144	12	0	179

Storage/Operating Temperature: -40℃-+70℃

Optical Characteristics

Fibre Type	Attenuation （+20℃）				Bandwidth		Numerical Aperture	Cable Cut-off Wavelength λcc
Fibre Type	@850nm	@1300nm	@1310nm	@1550nm	@850nm	@1300nm	Numerical Aperture	Cable Cut-off Wavelength λcc
G.652	---	---	≤0.36dB/km	≤0.22dB/km	---	---	---	≤1260nm
G.655	---	---	≤0.40dB/km	≤0.23dB/km	---	---	---	≤1450nm
50/125µm	≤3.3dB/km	≤1.2dB/km	---	---	≥500MHz·km	≥500MHz·km	0.200±0.015 NA	---
62.5/125µm	≤3.5dB/km	≤1.2dB/km	---	---	≥200MHz·km	≥500MHz·km	0.275±0.015 NA	---