Hebei Shenyi Metal Products Co., Ltd. is one of the leading manufacturers and suppliers of fiber optic duct in China. If you're going to wholesale bulk fiber optic duct made in China, welcome to get free sample from our factory. All customized metal products are with high quality and competitive price.
Core Features
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Project |
Specification |
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No damage to optical fiber |
The full arc design with a corner radius R≥40mm ensures the bending radius of the optical fiber and reduces attenuation. |
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Flame retardant safety |
ABS/PC/ABS/PVC, low smoke and zero halogen, FV-0 grade, standard fire protection for computer rooms. |
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Smooth inner wall |
Free of burrs, allowing the optical fiber to lie naturally and reducing the risk of fiber breakage. |
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Modularity |
straight through, elbow, tee, cross, fiber outlet, tool-free quick assembly. |
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Clear wiring |
Separated wiring for main slots and column slots, facilitating expansion and maintenance. |
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Longevity |
Anti-aging, with a design lifespan of 20 years or more. |
Common specifications (width × height, mm)
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Standard widths |
120, 240, 360. |
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Standard height |
50, 100. |
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Standard length |
2m/3m, customizable |
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Color |
Yellow. |
Production Procedure
(1) Extrusion Moulding: Using an injection moulding machine, thermoplastic materials like HDPE, LSZH, and PVC are heated, plasticised, and continuously extruded into hollow pipes that are then cooled and moulded.
(2) Co-extrusion Process: To create a composite structure and lower the coefficient of friction while producing a low-friction inner layer, the inner and outer layer materials are extruded concurrently via the same mould.
(3) Integration of Fibre Optic and Sheath:
Armouring and Cabling: During the production of duct optical cables, specific procedures are used to combine the steel/aluminum tape armour layer, loose tube, water-blocking material, and central reinforcement.
Sheath Coating: Using an extruder, LSZH or PE materials are wrapped around the optical fibre core to create a protective sheath.
(4) Patented/Special Processes: To create unique optical cables with increased mechanical strength and temperature resistance, some patented techniques include laser welding or precision sheet metal.
Principal Benefits of Fibre Optic Duct
Benefits of Material and Environmental Adaptability
Structural and Mechanical Benefits
(1)Flexible and Impact-Resistant: It has a high elongation at break and can tolerate deformations such car crushing and foundation settling without breaking.
(2)High Ring Stiffness/Compressive Strength: To accommodate varying burial depths and load requirements, high ring stiffness can be attained by corrugated structures or wall thickness design.
(3)Smoth Inner Wall/Low Friction: For solid-wall tubes, the smooth inner wall lowers the resistance to cable threading; for silicon core tubes/microtubes, the inner wall's silicon lining or silicon core layer produces an exceptionally low coefficient of friction, making it appropriate for long-distance air-blown cable blowing.
Advantages of Pipeline Network and Resource Utilization
Porous Structure/Sub-pipe System Improves Pipe Hole Utilization:
Laying multiple sub-pipes/micro-pipes within a single main pipe enables multi-route sharing, saving underground space.
Color Marking and Identification Management:
Different colors and lengths facilitate route identification and operation/maintenance.
Low Life Cycle Cost:
Although initial investment is slightly higher, high construction efficiency, less maintenance, and longer lifespan result in overall costs that are often lower than traditional cement/steel pipes.
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