Composite poles, transmission line towers, and steel pipe structures for power transmission are all core support components for overhead transmission lines, suitable for different grid operating conditions. Composite poles are manufactured using glass/carbon fibers through pultrusion/molding processes. They are lightweight, insulating, corrosion-resistant, and weather-resistant, making them suitable for harsh environments such as coastal areas and saline-alkali lands, as well as special grid nodes. Transmission line towers are assembled with steel members using bolted or welded connections, offering stable structures and strong load-bearing capacity, serving as the mainstay of power grid trunk lines. Steel pipe structures for power transmission are fabricated from steel pipes, balancing strength and cost-effectiveness, featuring convenient installation, and are widely used in medium and high voltage lines and substation frameworks .