Single Circuit Lattice Tower

The Single Circuit Lattice Tower is the most basic and widely used transmission tower type. It has a truss structure with cross‑arms arranged on one or both sides. One tower carries only one circuit (three‑phase AC or DC). This tower has a clear structure and simple forces. It is the preferred choice for plains and hills where land is relatively abundant. Qingdao Hongyuanfeng Power Equipment Co., Ltd. manufactures Single Circuit Lattice Towers using Q355B high‑strength angle steel. All towers are hot‑dip galvanized with a zinc coating of at least 86μm. This meets GB/T 2694‑2018 standards. In the Jiuquan 500kV DC project, many Single Circuit Lattice Towers were used. Data shows that these towers cost about 25‑30% less than double‑circuit towers. The line corridor width is about 30‑40 meters. We offer various shapes including cup‑type, cat‑head‑type, and dry‑type, covering voltages from 10kV to ±1100kV.

The main material is Q235B or Q355B national standard angle steel. All components are assembled with bolts. The maximum horizontal tension design value ranges from 40kN to 120kN. Maximum wind speed capacity is 35 m/s, and earthquake resistance is grade 8. The nominal height ranges from 18 meters to 51 meters. The horizontal span is typically 300‑600 meters. Our production facility includes 4 large laser cutters, 8 fully automatic angle steel lines, and 2 high‑speed drilling lines. Annual capacity is 2,000‑3,000 tons. We started in 2019 and our factory in Jiaozhou covers 151 mu with 120 employees. We hold 14 patents and have passed three management system certifications. We are a "High‑tech Enterprise" and "Qingdao Specialized SME".

Our Single Circuit Lattice Towers have been used in the Jiuquan 500kV DC project, the Qinghai‑Shandong 500kV DC project, and the Jiangsu‑Sichuan 800kV DC project. Data from State Grid shows that single‑circuit towers account for over 50% of all transmission towers in China. They are the backbone of the power grid. Our products provide a cost‑effective solution for new transmission lines. The simple design ensures fast installation and low maintenance.

Before the sale, our technical team provides planning and drawing services. We offer competitive quotes and support for tender 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.