Primarily low-carbon steel Q235, with high-strength structures using alloy steel Q345. Low-carbon steel provides an optimal balance of tensile strength (≥375 MPa) and ductility, withstanding complex outdoor loads (e.g., wind force, cable weight) while avoiding failure due to excessive rigidity. Alloy steel is suitable for 110 kV and higher voltage lines, capable of bearing significant loads (e.g., the combined weight of multiple insulator sets).
Anti-Corrosion Treatment:
Surfaces undergo hot-dip galvanization with a zinc coating thickness ≥85 μm, forming a dense protective layer resistant to rain, salt spray, and industrial exhaust erosion, ensuring an outdoor service life of 15–20 years. For highly corrosive coastal areas, a customized dual process of "hot-dip galvanizing + passivation" is available, further enhancing rust resistance and preventing premature zinc layer peeling.
Produced through integral forging or stamping without welded joints, ensuring uniform mechanical properties throughout. Critical connection holes (typically 14 mm or 16 mm in diameter) undergo drilling and chamfering to eliminate burrs that could damage fittings and facilitate bolt insertion.