Transmission Overhead Line Towers are fabricated from high-tensile carbon steel, specifically designed to withstand the combined forces of vertical cable weight and horizontal wind pressure. Every component undergoes a hot-dip galvanizing process that creates a protective zinc coating of at least 86 microns, ensuring a maintenance-free service life of 50 to 100 years.
Load and environmental parameters
| Parameter Category | Key Indicators |
| Design wind speed | 30-45 m/s (50-60 m/s in the typhoon zone) |
| Ice thickness | 0-30 mm (≤50 mm in high-altitude/cold regions) |
| Seismic intensity | 6-9 degrees (according to GB 50011) |
| Conductor/Ground wire load | Based on voltage level and span length, tension towers experience higher loads. |
| Ground wire suspension point load | ≤2000 kg; conductor crossarm load ≤3000 kg |
| Bearing capacity of the foundation | ≥150 kPa (Reinforcement required for soft foundations) |
| Grounding resistance | ≤10Ω (≤5Ω in humid areas) |
Primary Grid Applications
The Transmission Overhead Line Towers are implemented in several critical sectors of the energy infrastructure:
High-Voltage Transmission: Supporting 110kV to 1000kV AC and DC lines across rural and mountainous regions to connect power plants with urban load centers.
Industrial Power Supply: Providing dedicated electricity corridors for heavy manufacturing hubs, mining operations, and large-scale industrial parks.
Cross-Regional Crossings: Engineered for long-span crossings over rivers, valleys, and highways where high ground clearance and structural rigidity are mandatory.
Substation Integration: Serving as terminal or tension structures that manage the mechanical transition of high-voltage lines into transformer substations.
Service Advantages
Packaging and Shipping
We select appropriate packaging based on product characteristics and customer requirements to ensure the product is not damaged during transportation. We arrange for reliable transportation and provide tracking information, allowing customers to monitor the product's shipping status in real time.
Sample Provision
We provide product samples upon request to provide customers with a direct understanding of the product's quality, appearance, and performance. Samples can help customers make better decisions and build trust in our products.
Our Factory
Hebei Yifeng Steel Structure Co., Ltd. operates a high-capacity production facility in the industrial zone of Jing County, equipped with CNC angle steel punching lines and automated submerged arc welding systems. We offer wholesale partners full customization for all tower types, including suspension, tension, and angle towers, tailored to local wind speed and ice-loading requirements. Our integrated production process-from technical design and precision machining to final protective coating-ensures competitive factory-direct pricing and reliable lead times for international grid infrastructure projects.
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