Forged from Q345 alloy steel or 40Cr alloy structural steel. Both materials exhibit excellent tensile strength (≥500 MPa) and impact toughness, enabling them to withstand the combined weight of insulator strings and conductors, as well as complex external forces such as wind and ice loads, while preventing fracture or permanent deformation.
Precision Manufacturing:
After forging, components undergo quenching and tempering heat treatment to refine the grain structure and enhance overall mechanical properties. Surfaces are treated with hot-dip galvanizing for corrosion protection, with a zinc coating thickness ≥90 μm. This forms a dense sacrificial anode protective layer, ensuring 20–30 years of weather resistance and suitability for various harsh environments, including high-altitude, coastal, and industrial polluted areas. Critical mating surfaces (ball head and spherical interface) undergo precision grinding with a surface roughness ≤ Ra 0.8 μm, ensuring smooth rotation without jamming.