400 KV transmission line towers are critical components of modern energy grids, designed to transmit bulk electricity efficiently over long distances. Our high-strength, corrosion-resistant 400 KV steel transmission towers combine durability, safety, and compliance with international standards, making them ideal for power utilities, renewable energy projects, and grid expansions. Junjiang offers high quality steel tower for sale! Contact us now!
| Voltage | 400KV |
| Tower Type | Suspension Tower, Tension Tower, Dead Tower, Substation Structure |
| Height | 10M-100M |
| Circuit | Single / Double Circuit |
| Material | 1.High strength low alloy structural steel: Q420B which is equivalent with ASTM Gr60 2.High strength low alloy structural steels: Q355B which is equivalent with ASTM Gr50 or S355JR 3.Carbon Structural Steel: Q235B which is equivalent with ASTM A36 or S235JR |
| Welding | AWS D1.1 |
| Surface treatment | Hot dip galvanizing /painting/Powder coating |
| Hot dip galvanization | GB/T 13912-2002, EN ISO 1461,ASTM/A123 or equivalent |
| Welding Standard | AWS D1.1, AS554, AS 4100 standard or equivalent |
| Earthquakeproof Grade | Grade 8 |
| Ice wrapping | 5-10 mm |
| Verticality | 1 / 1000 |
| Working Temperature | - 45°C -+ 45°C |
| Nuts& Bolts | Mainly ISO 898 grade 6.8 and 8.8 bolts for Both Chinese, ISO and DIN standard |
| Working lifespan | 30/50 years |
400 kV electrical towers are critical components in modern power transmission networks, designed to handle ultra-high voltage (UHV) for efficient long-distance electricity distribution. Here are their key applications in power grids:
1. Long-Distance Bulk Power Transmission
400 kV towers enable high-capacity power transfer over extended distances with minimal energy loss, connecting remote power plants (e.g., hydroelectric, thermal) to urban demand centers.
2. Grid Interconnection & Stability
These towers link regional grids, ensuring reliable power supply and load balancing. They support synchronization between decentralized renewable energy sources (wind/solar farms) and traditional grids.
3. Renewable Energy Integration
With increasing renewable adoption, 400 kV infrastructure transports clean energy from wind/solar farms to substations, reducing curtailment and improving grid resilience.
4. Industrial & Urban Power Supply
They feed power-hungry industries (e.g., manufacturing, data centers) and megacities, meeting rising electricity demands while maintaining voltage stability.
5. Cross-Border Electricity Trade
400 kV lines facilitate international power exchanges, enhancing energy security and economic cooperation between neighboring countries.
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