What are the models of power steel poles?
The classification of power steel poles is mainly based on parameters such as voltage level, material, structural form and application scenarios, as follows:
1. Classification by Voltage Level
10kV - 220kV High Voltage Transmission Lines
Common models: 10KV, 35KV, 66KV, 110KV, 220KV, etc., suitable for different voltage level transmission requirements .
2. Classification by Material and Specifications
A、Q345B Series
Q345B Φ114×4.5×12000mm: Outer diameter 114mm, wall thickness 4.5mm, length 12m, suitable for tension towers, corner towers, etc.
Q345B Φ140×5.0×12000mm: Outer diameter 140mm, wall thickness 5.0mm, length 12m, resistant to high temperatures and wind loads, suitable for tension towers, straight towers.
Q345B Φ159×6.0×12000mm: Strong design, suitable for large power transmission lines and substation construction .
B、Q235B series
Q235B Φ76×4.0×9000mm: Outer diameter 76mm, wall thickness 4.0mm, length 9m, suitable for small transmission lines or urban power grids
3. Classification by structural form
Straight pole
Mainly used for straight sections of the line, to support conductors and lightning arresters, such as 12-meter and 15-meter non-prestressed cement poles.
Straddle poles and terminal poles
The tension pole bears the tension of the conductors, while the terminal pole is used at the beginning or end of the line, and is commonly seen in lines of 35kV and above.
guy wire steel pole
By using guy wires to enhance stability, it is suitable for complex terrains or scenarios with high loads .
4. Classification by the number of circuits
Single circuit, double circuit, four circuit steel poles
Single circuit is suitable for simple transmission lines, while double circuit and four circuit can meet high capacity requirements, such as 35kV double circuit terminal pole.
5. Special application model types
Urban power grid and mountainous line
It adopts a compact design (such as multi-angled poles, conical poles), occupying less space and adapting to complex terrains 8.
Example: 15-meter double circuit terminal pole, 17-meter straight tension pole.
6. Connection method classification
Flange connection type
Recommended for main pole connection, easy to install and high in stability.
7. Typical parameter range
Length: 7m - 25m (such as 12m, 15m are mainstream).
Diameter: 76mm - 350mm (such as Φ76, Φ114, Φ159, etc.) .
Material strength: Q235B (ordinary strength), Q345B (high strength), Q420 and above (ultra-high voltage lines) .
Summary and recommendation
Economical type: Q235B Φ76 × 4.0 × 9000mm, suitable for low-voltage urban power grid.
High-strength demand: Q345B Φ159 × 6.0 × 12000mm, used for large substations or heavy-load lines.
Complex terrain: guy wire steel poles or flange connection type design, enhancing stability.
The selection of these models should be combined with specific engineering requirements (such as voltage, terrain, load), and follow industry standards (such as material, anti-corrosion treatment).
