Primarily low-carbon steel Q235, with high-strength structures using alloy steel Q345. Low-carbon steel offers balanced strength and plasticity, allowing it to adapt to various tower bends and preventing installation failures due to excessive rigidity. Alloy steel is suitable for 110 kV and higher voltage lines, capable of withstanding heavy loads (e.g., the combined weight of crossarms and multiple sets of insulators).
Anti-Corrosion Treatment:
The core treatment involves hot-dip galvanizing with a zinc layer thickness ≥85 μm, forming a dense protective layer that resists rain, dust, and industrial emissions, ensuring a service life of 15–20 years. For coastal areas with high salt content in the air, a customized dual process of "hot-dip galvanizing + passivation" is available, further enhancing corrosion resistance and preventing premature zinc layer peeling.