Fire Resistant Fiber Optic Cable
Hengtong Solution for Mission-Critical Communication Systems
When Network Integrity Cannot Fail
As a global leader in optical fiber communications, Hengtong Group has pioneered advanced fire resistant fiber optic cable solutions that maintain signal integrity even under extreme fire conditions. With over 50 patented technologies in optical fiber cable innovation and manufacturing facilities across multiple continents, Hengtong delivers fire resistant fiber optic cable systems that protect lives and preserve mission-critical communications when it matters most.
Fire Resistant Fiber Optic Cable Products
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![Fire Resistant Multi Tube Single Jacket Single Armored Cable]()
Fire Resistant Multi Tube Single Jacket Single Armored Cable
Understanding the fire ratings andread more -
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![Fire Resistant Multi Tube Double Jacket Double Armored Cable]()
Fire Resistant Multi Tube Double Jacket Double Armored Cable
The overall structure of the Fireread more -
![Fire Resistant Multi Tube Single Jacket Cable]()
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![Fire Resistant FRP Strength Member Single Jacket Metal Armoured Cable]()
Fire Resistant FRP Strength Member Single Jacket Metal Ar...
Fire Resistant FRP Strength Memberread more -
![Fire Resistant Center Tube Single Jacket Steel Tape Armored Cable]()
Fire Resistant Center Tube Single Jacket Steel Tape Armor...
The overall Fire Resistant Center Tuberead more
Understanding Fire Resistant Fiber Optic Cable Technology
Fire resistant fiber optic cable represents a specialized category of optical transmission media engineered to maintain operational functionality during and after exposure to extreme heat and direct flame.
Unlike standard fiber optic cables that fail within minutes of fire exposure, fire resistant fiber optic cable incorporates multiple protective layers and advanced materials that enable continued signal transmission for extended periods—often exceeding three hours at temperatures reaching 1,000°C.
The fundamental architecture of fire resistant fiber optic cable differs substantially from conventional designs. At its core, the optical fibers themselves remain protected by specialized tube constructions filled with fire-blocking compounds. These tubes are individually wrapped with mica glass tape or other fire-resistant materials that create thermal barriers.
High-purity silica fibers designed for minimal signal loss even under thermal stress
Fire-Blocking Tubes
Specialized ceramic or metallic tubes filled with intumescent compounds
Thermal Barrier Layers
Mica glass tape and ceramic fiber wrappings providing extreme temperature protection
Strength Members
Fiberglass-reinforced plastic or aramid yarn providing structural integrity under heat
Low Smoke Zero Halogen compounds preventing toxic gas emission during combustion
LSZH Sheath Technology
The outer sheath of fire resistant fiber optic cable utilizes Low Smoke Zero Halogen (LSZH) compounds that meet the most stringent international fire safety standards. When exposed to fire, these materials do not release toxic gases that can impair visibility, damage electronic equipment, or harm building occupants attempting evacuation.
This characteristic proves particularly crucial in enclosed spaces such as tunnels, subways, high-rise buildings, and underground facilities where smoke inhalation represents the primary cause of fire-related fatalities.
Temperature resistance
Up to 1000°C
Operational duration under fire
3+ hours
Smoke emission
Ultra-low (LSZH)
Toxic gas release
Zero halogen
Critical Application Scenarios
Fire resistant fiber optic cable provides essential communication continuity across diverse environments where failure during fire could have catastrophic consequences.
Emergency Communication Systems
Fire resistant fiber optic cable forms the backbone of emergency communication networks in hospitals, airports, government facilities, and large commercial complexes. These systems must remain operational during fires to coordinate evacuation procedures, guide emergency responders, and maintain contact with external emergency services.
In healthcare facilities, fire resistant fiber optic cable ensures that patient monitoring systems, nurse call stations, and critical care equipment continue functioning even as building sections become compromised by fire.
Transportation Infrastructure
Modern transportation hubs including railway stations, subway systems, airport terminals, and highway tunnels rely extensively on fiber optic networks for operations management, passenger information systems, and safety monitoring.
Fire resistant fiber optic cable maintains connectivity for tunnel ventilation control systems, emergency lighting networks, public address systems, and CCTV surveillance. Hengtong's specialized cables feature enhanced mechanical protection through corrugated steel tape armor.
High-Rise Buildings
Vertical buildings present distinct fire safety challenges. Fire and smoke travel upward through elevator shafts, stairwells, and utility chases, potentially disabling communication systems floor by floor.
Fire resistant fiber optic cable designed for building risers maintains signal transmission across multiple floors, ensuring that fire alarm panels, emergency intercoms, and evacuation systems remain operational throughout the structure.
Industrial Facilities
Oil refineries, chemical plants, and manufacturing facilities face elevated fire risks due to the nature of their operations. These environments require communication systems that continue functioning during industrial fires.
Fire resistant fiber optic cable provides the necessary reliability for distributed control systems, safety instrumented systems, and plant-wide communications networks, with additional protection against electromagnetic interference.
Public Assembly Venues
Sports stadiums, convention centers, theaters, and shopping complexes accommodate large numbers of people in concentrated areas. The potential for panic during fires makes reliable emergency communication systems essential.
Fire resistant fiber optic cable enables distributed antenna systems, emergency notification networks, and surveillance infrastructure that guides safe evacuation and supports first responder coordination in these complex environments.
Fire Resistance Requirements by Application
ndustrial Facilities：1000°C+
Transportation Tunnels：950°C
High-Rise Buildings：850°C
Public Venues：800°C
Healthcare Facilities：750°C
Hengtong Solution Advantage
All Hengtong fire resistant fiber optic cables exceed the maximum requirements for each application category, providing an additional safety margin when it matters most.
Key Advantages of Hengtong Fire Resistant Fiber Optic Cable
Hengtong's fire resistant fiber optic cable technology combines advanced materials science with precision engineering to deliver unmatched performance in critical environments.
Proven Fire Performance
Hengtong's fire resistant fiber optic cable has been extensively tested and certified to meet the most rigorous international fire safety standards. The cables maintain operational functionality for over three hours when exposed to temperatures reaching 1,000°C, far exceeding the requirements of IEC 60331-25 and other global fire resistance standards.
The fire resistant fiber optic cable undergoes real-world fire testing, not just material flammability assessments. This comprehensive approach validates that complete cable assemblies—including connectors, terminations, and installation configurations—maintain signal transmission during actual fire conditions.
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Advanced Manufacturing Technology
Hengtong leverages PCVD (Plasma Chemical Vapor Deposition) technology for optical fiber production, ensuring precise refractive index distribution and exceptional transmission performance. This advanced manufacturing process creates fire resistant fiber optic cable with superior optical characteristics, enabling high-bandwidth data transmission essential for modern emergency communication systems.
The company's vertically integrated production capability—spanning optical fiber preforms, fiber drawing, cable construction, and connector assemblies—guarantees consistent quality throughout every fire resistant fiber optic cable product.
02
Comprehensive Product Portfolio
Hengtong offers fire resistant fiber optic cable in configurations supporting virtually any application scenario. Single-mode and multimode fiber options accommodate different transmission distance and bandwidth requirements. Fiber counts from 4 to 144 cores enable everything from simple backup links to high-capacity network backbones.
For indoor applications, fire resistant fiber optic cable with OFNP ratings provides the flame and smoke characteristics required in air-handling spaces. Outdoor versions feature UV-stable LSZH jacketing that withstands environmental exposure while maintaining fire resistance.
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Bend-Insensitive Design
Modern fire resistant fiber optic cable from Hengtong incorporates bend-insensitive fiber technology that maintains low signal loss even at small bending radii. This capability proves essential in complex cabling environments such as data centers, telecommunications rooms, and equipment racks where space constraints necessitate tight cable routing.
Bend-insensitive fire resistant fiber optic cable also simplifies installation, reducing the skill level required for proper deployment and minimizing installation time. Installers need not worry about excessive signal loss from inadvertent bending during cable pulling or termination procedures.
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Long-Term Reliability and Durability
Beyond fire resistance, Hengtong's fiber optic cables incorporate design features that ensure long-term reliability in demanding environments. The use of high-quality materials, robust construction methods, and protective armor options creates fire resistant fiber optic cable that withstands decades of continuous operation.
The fire resistant fiber optic cable maintains stable transmission characteristics across wide temperature ranges, from -40°C to +70°C, accommodating both arctic conditions and tropical climates. This thermal stability ensures reliable performance in outdoor installations, unheated buildings, and industrial environments.
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Performance Comparison
| Feature | Hengtong Fire Resistant | Standard Fiber Cable | Conventional Fire-Rated Cable |
|---|---|---|---|
| Fire survival time | 3+ hours | <10 minutes | 1-2 hours |
| Max temperature resistance | 1000°C | 200-300°C | 750°C |
| Smoke emission | Ultra-low (LSZH) | High (PVC) | Medium |
| Bandwidth capacity | 100+ Gbps | 100+ Gbps | 1-10 Gbps |
| Installation flexibility | High | High | Low |
Pain Points Addressed by Fire Resistant Fiber Optic Cable
Hengtong's fire resistant fiber optic cable technology solves critical challenges faced by facility managers, safety engineers, and building owners.
Regulatory Compliance
Building codes and fire safety regulations worldwide increasingly mandate fire-resistant communication infrastructure for new construction and renovation projects. Meeting these requirements with traditional cabling proves difficult or impossible.
Fire resistant fiber optic cable from Hengtong addresses this compliance challenge by exceeding regulatory requirements across global markets, with certifications from UL, Bureau Veritas, DNV, and other internationally recognized testing organizations.
System Downtime During Fires
The most critical pain point that fire resistant fiber optic cable addresses is the complete communication system failure that occurs when conventional cables succumb to fire. This downtime prevents coordination of evacuation, disables fire suppression systems, and eliminates the ability to communicate with trapped occupants.
Fire resistant fiber optic cable eliminates this catastrophic failure mode by maintaining operational functionality throughout fire events, dramatically improving emergency response effectiveness while protecting lives and property.
Limited Installation Flexibility
Traditional fire-resistant cable technologies often employ heavy metallic construction or require special conduit installations that limit routing flexibility and increase installation costs. These constraints prove particularly problematic in renovation projects.
Fire resistant fiber optic cable provides lightweight, flexible alternatives that install easily in existing cable trays, raceways, and tight spaces. This installation flexibility reduces project costs while accelerating deployment schedules.
High Total Cost of Ownership
Initial cost concerns sometimes discourage adoption of fire-resistant communication infrastructure. However, comprehensive lifecycle cost analysis reveals that fire resistant fiber optic cable delivers superior economic value compared to alternatives.
The extended operational lifetime, bandwidth capacity, liability protection and insurance cost reductions resulting from proper fire-resistant communication infrastructure offset initial investment.
Technical Specifications and Standards Compliance
Hengtong's fire resistant fiber optic cables meet or exceed the most demanding international standards for performance and safety.
Fire Resistance Testing Standards
Fire resistant fiber optic cable from Hengtong meets or exceeds requirements established by leading international standards organizations.
IEC 60331-25
Fire resistance testing at 750°C for three hours
UL 1666
Riser ratings for vertical installations
IEEE 1202/FT4
Flame propagation resistance
CPR Euroclass
Dca, Cca, and B2ca classifications
Hengtong Enhanced Testing
1,000°C for three hours (exceeds standards)
Optical Performance Characteristics
Fire resistant fiber optic cable must deliver not only fire survival but also excellent optical transmission performance.
Single-mode insertion loss：<0.3 dB/km
Multimode insertion loss：<3.0 dB/km
Return loss (single-mode)：>55 dB
Transmission capacityUp to ：100 Gbps
Mechanical and Environmental Specifications
Hengtong's fire resistant fiber optic cables are designed to withstand harsh installation and operating conditions.
- Tensile strength：1,000+ N (standard)
- Operating temperature range：-40°C to +70°C
- Water protection：IPX8 rated
- Crush resistance：10 kN/m
- Bend radius (fixed):10× cable diameter
- Bend radius (dynamic):20× cable diameter
- Service life:25+ years
Main Products
Fire Resistant Multi tube Single Jacket Single Armored Cable
Fire Resistant Multi tube Double Jacket Single Armored Cable
1-Loose Tube
2-Tube Filling Compound
3-Strength Member
4-Fiber
5-Inner Sheath
6-Filler Rod
7-Cable Filling Compound
8-Steel Tape
9-Outer Sheath
Multi tube Double Jacket Stainless Steel Tape Armored Anti Rodent Cable.
1-Fiber
2-Loose Tube
3-Tube Filling Compound
4-Parallel Steel Wire
5-Water Blocking Material
6-Steel Tape
7-Flame-retardant Sheath
Why Hengtong is the top optical cable supplier?
Company capability
We are a company that has passed ISO9001 quality management system certification, ISO14001 environmental management system certification, ISO45001 occupational health and safety management system certification, IECQ hazardous substances process management system certification, which shows that we have the best manufacturing capabilities, correct material certification and advanced Technology. The optical cables produced by Hengtong comply with relevant standard requirements in terms of materials and performance.
Your trusted fiber optic cable manufacturer
Hengtong stands out as a dedicated provider of optical cables and a bespoke optical cable manufacturer. Our offerings cater to a wide array of industries, spanning telecommunications, broadcasting, transportation, industrial automation, and more.
Customized services
Hengtong offers a bespoke approach to optical cable solutions, catering to the individualized needs and preferences of our clients. Our commitment involves designing and producing customized products that perfectly align with project requirements, guaranteeing optimal functionality and satisfaction.
Fast delivery time
By providing instant quotes and optimizing our production process, Hengtong ensures swift delivery times for your convenience. Leveraging our vast technical expertise and proficiency, we expedite our operations efficiently to meet your deadlines effectively.
FAQ
Q: What is flame retardant optical cable?
Q: What is the difference between fire resistant fiber optic cables and ordinary optical cables?
Q: Why do we need to use flame-retardant optical cables?
Q: Is the price of flame-retardant optical cables higher than ordinary optical cables?
Q: What happens if fiber optic cable gets too hot?
Q: Low Smoke Zero Halogen (LSZH)
Q: What makes our fire-resistance optical fiber cables set apart?
-Advanced Fire-Resistant Materials: We utilize cutting-edge materials engineered to withstand high temperatures and flames, ensuring unparalleled fire resistance. This proactive approach minimizes risks and enhances safety in railway environments.
-Optimal Signal Transmission: With high-quality optical fibers and advanced design, our cable guarantees optimal signal transmission performance.
-Compliance with Standards: Hengtong's Fire-Resistance Optical Fiber Cable meets or exceeds relevant industry standards and certifications. This ensures compatibility and interoperability with existing railway infrastructure and equipment, providing peace of mind to railway operators and authorities.
-Commitment to Quality: Hengtong is committed to excellence in every aspect of our products and services. From design and manufacturing to testing and customer support, we uphold the highest standards of quality and reliability, ensuring customer satisfaction and trust.
Q: What is the meaning of the OFNR and OFNP fiber cable designations?
This is a cable containing only glass fiber with no copper conductive elements. It is generally intended for vertical runs between floors as parts a fiber backbone. This type of cable complies with Underwriters Laboratories (UL) fire safety test Riser/1666.
OFNP (Optical Fiber Nonconductive Plenum)
This is a cable containing only glass fiber with no copper conductive elements. It is generally intended for horizontal runs especially within an air handling conduit. This type of cable complies with the Underwriters Laboratories (UL) fire safety test Plenum/910.
Q: Can you offer me product’s Customization and R & D?
Q: Will the quality of ordered products be the same to the sample what I have confirmed?
We're professional fire resistant fiber optic cable manufacturers and suppliers in China, specialized in providing high quality products and service. If you're going to wholesale customized fire resistant fiber optic cable, welcome to get quotation from our factory.
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