Turning Lines with Compact Strength
The Angle Four Leg Tower is a special tower type for changing transmission line direction. When lines need to go around mountains, avoid obstacles, or change routing, this tower handles the conductor turning. It must bear both vertical loads and the horizontal pull from the line angle. The forces are much more complex than those on a straight tower. Compared with angle steel turning towers, the four‑leg pipe tower has lower wind drag, a smaller footprint, and a cleaner appearance. These features make it popular in urban peripheral areas and landscape‑sensitive projects. Qingdao Hongyuanfeng Power Equipment Co., Ltd. manufactures Angle Four Leg Towers using Q355B high‑strength steel pipes. We perform asymmetric structural reinforcement based on the turning angle. The inner and outer sides use different wall thicknesses and strengthening measures. The entire tower receives hot‑dip galvanizing with a zinc coating of at least 86μm. This meets GB/T 2694‑2018 national standards. Our production equipment includes a 3200T heavy‑duty bending machine and an 800T hydraulic press. Monthly production capacity for pipe towers is 1,000‑1,500 tons.
Height and Turning Specifications
Our Angle Four Leg Towers range from 20 meters to 50 meters in height. They cover voltage levels from 110kV to ±1100kV. The line turning angle supports 0° to 90° customization. The maximum horizontal tension design value ranges from 50kN to 150kN. Maximum wind speed capacity is 35 m/s, and earthquake resistance is grade 8. Standard delivery takes 15‑20 days. Our factory in Jiaozhou covers 151 mu with 120 employees. We hold 14 patents, 2 trademarks, and 3 administrative licenses. We have passed three management system certifications and are a "High‑tech Enterprise". Our certified inspectors perform full quality control from raw materials to finished products. We support custom production according to customer drawings with a minimum order of 10 tons. We can mix different models or sizes in one order.
Application in Urban Grid Projects
Our Angle Four Leg Towers have been used in many urban peripheral power grid projects. We supplied towers for the Jiuquan 500kV DC project and the Qinghai‑Shandong 500kV DC project. In land‑scarce areas, these towers effectively solve the problem of traditional angle steel towers conflicting with urban landscapes. They offer a modern appearance while maintaining structural strength. Our towers also serve the West‑to‑East power transmission project. We offer a 2‑year warranty and accept third‑party inspections. We perform 100% inspection before packing. Our strong production scheduling ensures on‑time delivery.
Full Service Support
Before the sale, our technical team provides planning and drawing support. We offer competitive quotes and assist with tender technical queries. During production, we share progress and coordinate shipping. We confirm site conditions in advance. After the sale, we offer a 2‑year warranty and on‑site installation guidance. We also conduct regular follow‑up visits.
Technical Specifications
|
Parameter |
Specification / Range |
Notes |
|
Tower Height |
20m ~ 50m |
Customizable per line needs |
|
Voltage Rating |
110kV ~ ±1100kV |
|
|
Line Turning Angle |
0° ~ 90° |
Customizable per project |
|
Main Material |
Q355B High‑strength Steel Pipe |
Hot‑dip galvanized |
|
Max Horizontal Tension |
50kN ~ 150kN |
Designed per working conditions |
|
Zinc Coating Thickness |
≥86μm |
Meets GB/T 2694‑2018 |
|
Max Wind Speed Capacity |
35 m/s |
|
|
Earthquake Resistance |
Grade 8 |
|
|
Application Scenarios |
Urban peripheral turning lines |
|
|
Design Standard |
GB 50135 / DL/T 5154 |
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