Terminal Transmission Tower

The Terminal Transmission Tower is a critical structure at the connection point between a transmission line and a substation or underground cable. It sits at the end of the line. It must withstand the full mechanical load of the entire line, including horizontal tension and vertical loads. This makes it one of the most heavily stressed tower types. Qingdao Hongyuanfeng Power Equipment Co., Ltd. manufactures Terminal Transmission Towers with four‑column angle steel truss structures. The base includes an equipment platform with reserved cable entry points. We equip each tower with horizontal tension insulator strings. Every component gets hot‑dip galvanizing with a zinc coating of at least 86μm. This meets GB/T 2694‑2018 standards. The design considers safety clearances for conductor entry, down‑lead, and conversion. The structure is compact but extremely strong. Our towers adapt to 110kV to ±1100kV lines. We provide complete export technical documentation and project support.

The main material is Q235B or Q355B national standard angle steel. The maximum horizontal tension design value ranges from 60kN to 180kN. The maximum wind speed capacity is 35 m/s, and earthquake resistance is grade 8. Our production facility includes 8 fully automatic angle steel lines and 2 high‑speed drilling lines. Annual capacity is 2,000‑3,000 tons. Standard delivery takes 15‑20 days. We have passed quality, environmental, and occupational health certifications. We are a recognized "High‑tech Enterprise." Our certified inspectors check every step. We perform 100% inspection before packing and accept third‑party inspection. We can handle small orders and mix different models in one shipment.

Our Terminal Transmission Towers have been successfully used in many substation projects, including the Suzhou Yuexi 500kV Substation and Xishan 500kV Substation. In the Xinjiang Changji 220kV project, we supplied 4 Terminal Towers out of 116 total towers. Our products also contributed to the West‑to‑East power transmission project. The terminal tower solves the challenge of safely transitioning from overhead lines to substation equipment or underground cables. It reduces the footprint of line termination and improves reliability.

Before the sale, our engineers discuss project requirements and provide cost estimates. They also assist with tender documentation. During production, we update customers on progress and shipping. We coordinate logistics and confirm site readiness. After the sale, we offer a 2‑year warranty and on‑site installation guidance. We also conduct regular follow‑up visits. We accept third‑party inspections and ensure all products are 100% checked before packing.