Galvanized Steel Wire for Cable Armoring is a high-performance protective component specially engineered for steel wire armored (SWA) power cables, telephone cables, and telecommunication cables. Manufactured from premium low-carbon steel rod through precision drawing, annealing, and hot-dip galvanizing processes, this wire delivers exceptional mechanical strength, uniform corrosion protection, and reliable performance in demanding underground, submarine, and industrial environments.
Key Applications
Galvanized steel wire is widely used as the metallic armor layer in:
- Medium- and high-voltage power cables (SWA – Steel Wire Armored)
- Telecommunication and telephone cables
- Submarine and underground power distribution cables
- Armored control, instrumentation, and specialty cables
It provides robust protection against mechanical damage, rodent attacks, crushing forces, and environmental corrosion while maintaining excellent cable flexibility and long-term reliability.
Outstanding Advantages
- Industry-Leading Production Scale — One of the largest steel wire producers in China with reliable global supply capacity
- Wide Diameter Range — 0.15 mm to 8.00 mm, suitable for various cable constructions and armor designs
- Premium Raw Materials — Carefully selected high-quality steel wire rod ensuring stable and consistent performance
- Full-Process Quality Monitoring — Rigorous control from raw material inspection to final galvanizing
- Narrow Tensile Strength Range — Tight tolerance for uniform mechanical properties across production batches
- Uniform Galvanizing Layer — Excellent corrosion resistance with smooth, consistent zinc coating
- Smooth Pay-off Performance — Optimized for high-speed automatic armoring machines with minimal tangling or breakage
Manufacturing Standards
Produced in full compliance with major international specifications:
- BS EN 10257-1 (BS 1142)
- BS EN 10257-2 (BS 443)
- BS EN 10244-2
- BS 4545
- JIS G 3457
Production Process
The wire undergoes a controlled, multi-stage manufacturing process to achieve optimal mechanical and anti-corrosion properties:
- Steel Wire Rod Drawing — Initial reduction from raw rod
- Intermediate Drawing to 2.0 mm — Precision sizing
- Coal Furnace Annealing — Stress relief and ductility improvement
- Water Tank Drawing — Further diameter reduction
- Electric Furnace Annealing — Final heat treatment for uniform properties
- Hot-Dip Galvanization — Uniform zinc coating for corrosion protection
- Final Inspection & Packing — Quality verification and protective packaging
| المعلمة |
Typical Value |
Test Condition / Standard |
| Diameter Range |
0.15 mm – 8.00 mm |
Precision drawing |
| قوة الشد |
27.6–48.19 kg/mm² |
ISO 6892 |
| Zinc Coating |
80–140 g/m² |
Hot-dip galvanization |
| Elongation |
≥10% |
ISO 6892 |
| Corrosion Resistance |
ممتاز |
Salt spray and humidity test |
| Surface Finish |
Smooth & uniform |
Visual and dimensional inspection |
| Standards |
BS EN 10257-1/2, BS EN 10244-2, BS 4545, JIS G 3457 |
International compliance |
Packaging Options
Available in two convenient formats for efficient handling and high-speed production:
- Coils — Ideal for manual or semi-automatic armoring processes
- Plastic Spools — Designed for high-speed automatic cable armoring machines
Custom packaging solutions and labeling are available according to customer requirements.
Galvanized Steel Wire for Cable Armoring from RLB is the trusted choice for cable manufacturers seeking superior mechanical protection, outstanding corrosion resistance, and reliable performance in power and telecommunication cables.
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