ADSS/OPGW Metal Junction Box Manufacturer | Fiber Optic Joint Box Supplier | Shanghai Herrajes Industry Co., Ltd.
Shanghai Herrajes Industry Co., Ltd. is a professional manufacturer and supplier of ADSS/OPGW Metal Junction Boxes, Fiber Optic Joint Boxes, Fiber Optic Splice Closures, and transmission line accessories for power utility and telecommunication projects worldwide.
Our ADSS/OPGW Metal Junction Box is designed to provide reliable protection for optical fiber splicing and cable management in outdoor overhead transmission line systems. It is widely used in ADSS (All-Dielectric Self-Supporting Cable) and OPGW (Optical Ground Wire) installations to protect fiber splice points against moisture, dust, UV radiation, corrosion, vibration, and other harsh environmental conditions.
Whether installed on transmission towers, utility poles, substations, or communication infrastructure, the Fiber Optic Joint Box ensures long-term protection and stable optical transmission for modern power and telecom networks.
What is an ADSS/OPGW Metal Junction Box?
An ADSS/OPGW Metal Junction Box, also known as a Fiber Optic Joint Box, Optical Fiber Junction Box, Fiber Splice Box, or Fiber Optic Splice Closure, is a protective enclosure specifically designed for outdoor optical fiber cable splicing.
Its primary function is to:
Protect fiber optic splice points
Organize optical fibers and splice trays
Maintain the minimum bending radius of optical fibers
Secure optical cable entries and exits
Prevent water, dust, insects, and corrosion from affecting fiber connections
Extend the service life of optical communication systems
Unlike indoor fiber distribution boxes, an OPGW Joint Box is engineered for long-term outdoor operation under severe weather conditions, making it an essential accessory for transmission line fiber optic networks.
ADSS/OPGW Metal Junction Box from Shanghai Herrajes Industry Co., Ltd.
At Shanghai Herrajes Industry Co., Ltd., every ADSS/OPGW Metal Junction Box is manufactured using high-strength aluminum alloy with precision machining and strict quality control.
The enclosure offers excellent mechanical strength while remaining lightweight and corrosion resistant. Its weatherproof structure provides IP65 protection, ensuring reliable performance in demanding outdoor environments.
Our junction boxes are suitable for both new transmission line construction and maintenance projects involving ADSS and OPGW fiber optic cables.
Available fiber capacities include:
12 Fiber
24 Fiber
36 Fiber
48 Fiber
60 Fiber
Customized capacities are also available according to customer requirements.
Key Features：
High-strength aluminum alloy construction
Excellent corrosion resistance for outdoor applications
IP65 waterproof and dustproof protection
UV-resistant surface treatment
Lockable enclosure for enhanced security
Smooth interior design without sharp edges to protect optical cables
Professional fiber splice tray management
Maintains the minimum optical fiber bending radius
Easy installation and maintenance
Clear identification labels for fiber tubes and fiber cores
Suitable for ADSS and OPGW fiber optic cable splicing
Multiple cable entry port configurations
Tower mounting, pole mounting, wall mounting, and pedestal installation available
Resistant to rain, snow, wind, humidity, salt spray, and temperature extremes
OEM and ODM manufacturing services available
Applications：
The ADSS/OPGW Metal Junction Box is widely used in:
Electrical power transmission lines
High-voltage transmission projects
Substations
Distribution networks
Renewable energy projects
Wind farms
Solar power plants
Railway communication systems
Highway communication systems
Smart grid infrastructure
Telecommunication backbone networks
Utility communication networks
It is compatible with various ADSS optical cables, OPGW cables, and other outdoor fiber optic cable systems.
Installation Options：
Our Fiber Optic Joint Boxes are designed for multiple installation methods, including:
Transmission Tower Mounting
Utility Pole Mounting
Wall Mounting
Pedestal Mounting
Customized mounting brackets can also be supplied according to project drawings.
Technical Advantages
Compared with ordinary fiber splice enclosures, the Shanghai Herrajes Industry Co., Ltd. ADSS/OPGW Metal Junction Box offers:
Strong mechanical protection
Excellent weather resistance
Stable sealing performance
Long service life
Easy fiber organization
Reliable optical fiber protection
Reduced maintenance costs
Fast installation
Professional appearance
Flexible customization options
OEM & Custom Manufacturing
Shanghai Herrajes Industry Co., Ltd. provides complete OEM and customized manufacturing services for global customers.
Customization options include:
Aluminum alloy enclosure dimensions
Fiber capacity
Cable entry ports
Mounting brackets
Surface finish
Company logo
Packaging
Technical labels
Customer drawings
Special project requirements
Our engineering team can manufacture products according to technical drawings or customer specifications.
Quality Control
Every ADSS/OPGW Metal Junction Box undergoes strict inspection before shipment.
Quality control includes:
Material inspection
Dimensional inspection
Surface treatment inspection
Assembly inspection
Sealing inspection
Waterproof testing
Packaging inspection
This ensures reliable performance for long-term outdoor operation.
Why Choose Shanghai Herrajes Industry Co., Ltd.?
Shanghai Herrajes Industry Co., Ltd. specializes in manufacturing and exporting power transmission line accessories, overhead line fittings, and fiber optic hardware for customers around the world.
Our advantages include:
Professional manufacturer of power line accessories
Extensive experience in ADSS and OPGW fittings
Stable product quality
Competitive factory pricing
OEM & ODM services
Fast production and delivery
Global export experience
Professional technical support
Flexible customization
Reliable after-sales service
We are committed to supplying high-quality ADSS/OPGW Metal Junction Boxes, Fiber Optic Joint Boxes, and transmission line accessories for utilities, EPC contractors, distributors, and telecom companies worldwide.
Related Products
ADSS Suspension Clamp
ADSS Tension Clamp
OPGW Suspension Clamp
OPGW Tension Clamp
Down Lead Clamp
Vibration Damper
Cable Storage Assembly
Cable Clamp
Pole Band
Stainless Steel Band
Guy Grip Dead End
Armor Rod
Helical Fittings
Fiber Optic Accessories
Transmission Line Hardware
Overhead Line Fittings
Frequently Asked Questions (FAQ)
1. What is an ADSS/OPGW Metal Junction Box?
An ADSS/OPGW Metal Junction Box, also known as a Fiber Optic Joint Box, Optical Fiber Junction Box, or Fiber Optic Splice Closure, is an outdoor enclosure designed to protect optical fiber splice points and organize fiber connections. It is widely used in ADSS and OPGW cable systems for power transmission, substations, and telecommunication networks.
2. What is the difference between an OPGW Joint Box and a Fiber Optic Splice Closure?
In most applications, these terms refer to the same type of product. OPGW Joint Box, Fiber Optic Joint Box, Fiber Optic Splice Closure, and Optical Fiber Junction Box are commonly used interchangeably in the power transmission and telecommunications industries. The naming may vary by country or project specification, but their primary function is to protect and manage optical fiber splices.
3. What materials are used for the ADSS/OPGW Metal Junction Box?
Shanghai Herrajes Industry Co., Ltd. manufactures ADSS/OPGW Metal Junction Boxes using high-strength aluminum alloy, providing excellent mechanical strength, corrosion resistance, lightweight construction, and long service life for outdoor environments.
4. Is the ADSS/OPGW Metal Junction Box waterproof?
Yes. Our ADSS/OPGW Metal Junction Box features an IP65-rated enclosure that provides effective protection against dust, rain, moisture, and harsh outdoor conditions. It is designed for long-term operation in power transmission and communication networks.
5. What fiber capacities are available?
Shanghai Herrajes Industry Co., Ltd. supplies ADSS/OPGW Metal Junction Boxes with multiple fiber capacities, including:
12 Fibers
24 Fibers
36 Fibers
48 Fibers
60 Fibers
Customized fiber capacities are also available upon request.
6. How do I choose the correct fiber capacity?
The required fiber capacity depends on your cable design, network expansion plans, and project specifications. If you are unsure which model is suitable, Shanghai Herrajes Industry Co., Ltd. can recommend the appropriate ADSS/OPGW Metal Junction Box based on your cable type, fiber count, and installation environment.
7. Can the Metal Junction Box be customized?
Yes. We provide OEM and customized manufacturing services, including:
Fiber capacity
Cable entry ports
Mounting brackets
Dimensions
Surface treatment
Company logo
Packaging
Technical labels
Custom production according to customer drawings or technical specifications is also supported.
8. What installation methods are available?
Our ADSS/OPGW Metal Junction Boxes are suitable for:
Transmission tower mounting
Utility pole mounting
Wall mounting
Pedestal mounting
Customized mounting solutions are also available for special projects.
9. What industries use ADSS/OPGW Metal Junction Boxes?
Our Fiber Optic Joint Boxes are widely used in:
Electrical power transmission
Power distribution
Telecommunications
Smart grid projects
Renewable energy
Wind farms
Solar power plants
Railway communication systems
Highway communication networks
Utility infrastructure
10. Can the enclosure withstand harsh outdoor environments?
Yes. The aluminum alloy enclosure is designed to withstand UV radiation, heavy rain, snow, wind, humidity, corrosion, and wide temperature variations, making it suitable for long-term outdoor installation.
11. Does the junction box protect the optical fiber bending radius?
Yes. The internal fiber management system is designed to maintain the recommended minimum bending radius, reducing signal loss and protecting fiber performance during installation and maintenance.
12. Can Shanghai Herrajes Industry Co., Ltd. provide OEM and ODM services?
Absolutely. Shanghai Herrajes Industry Co., Ltd. provides OEM and ODM manufacturing services for customers worldwide. We can manufacture ADSS/OPGW Metal Junction Boxes according to customer drawings, technical specifications, branding requirements, and packaging designs.
13. What quality control does Shanghai Herrajes Industry Co., Ltd. perform?
Every ADSS/OPGW Metal Junction Box undergoes strict quality inspection before shipment, including:
Raw material inspection
Dimensional inspection
Surface finish inspection
Assembly inspection
Waterproof sealing inspection
Final quality inspection
Packaging inspection
This ensures reliable performance and consistent product quality.
14. Why choose Shanghai Herrajes Industry Co., Ltd. as your ADSS/OPGW Metal Junction Box supplier?
Shanghai Herrajes Industry Co., Ltd. is a professional manufacturer and exporter specializing in power transmission line hardware, overhead line fittings, and fiber optic accessories. We offer:
Stable product quality
Competitive factory prices
Professional engineering support
OEM & ODM manufacturing
Fast delivery
Global export experience
Strict quality control
Responsive customer service
Our products are supplied to utilities, EPC contractors, distributors, wholesalers, and telecommunication companies worldwide.
15. How can I request a quotation?
Simply send Shanghai Herrajes Industry Co., Ltd. your technical drawings, product specifications, fiber capacity, installation requirements, or project details. Our sales team will provide a competitive quotation, technical support, and the most suitable solution for your application.
Contact us at sales@heindustry.com or nicole@heindustry.com to learn more about our joint junction box, request a quotation, or discuss your specific project needs, and mention the code “666” to receive an extra discount on your order.
