Pre-twisted Yarn Must Withstand The Test Of Wind, Rain, And Sun Exposure.

For armor rods for acsr, wind resistance means resistance to wind vibration and fatigue. Strong winds cause conductor vibration, and frequent vibrations apply periodic stress to the stranded structure. If the steel strands of armor rods transmission line become loose or experience material fatigue, they may break strand by strand, leading to a decrease in overall strength.

Withstanding rain means resisting the effects of moisture erosion and corrosion. Rainwater carries moisture and chemical components that can promote oxidation of the metal surface. If the surface treatment, plating, or protective layer of armour rod is inadequate, the steel wire will lose its original mechanical properties due to corrosion, reducing its service life and safety factor.