Power transmission steel poles can be mainly classified into lightweight steel poles and steel pipe poles according to their structural form. Lightweight steel poles are a type of lightweight steel pole, typically used for the external structure or branch circuits of power transmission lines. They are characterized by low manufacturing cost, simple structure, and light weight, and their surface is usually treated with hot-dip galvanizing for corrosion protection. Steel pipe poles are typical power poles made of steel pipes and are widely used in power transmission lines. Their advantages include low manufacturing cost, light weight, and good structural stability.
The main material used to manufacture power transmission steel poles is carbon structural steel. This material has low manufacturing cost, stable performance, high profile stability, load-bearing capacity, and seismic resistance. It is also a recyclable and environmentally friendly material.
In structural design, the cross-sectional shape of the steel pipe pole affects its stress characteristics. Common cross-sections include annular, hexagonal, and dodecagonal shapes. Generally speaking, the more sides, the better the stress performance and the less material is consumed, but the processing difficulty also increases accordingly.