66kv Lattice Steel Tower is a steel structure frame that maintains a certain safety distance between supporting conductors and ground wires and ground buildings in the transmission line;

According to its shape, it is generally divided into five types: wine cup type power tower, cat head type power tower, top type power tower, dry type and barrel type power tower;

It can be divided into tension type power tower, linear type power tower, corner type power tower, transposition type power tower (replacement of conductor phase position tower), terminal power tower and spanning power tower according to the purpose;

Their structural characteristics are that all tower types belong to space truss structures. The members are mainly composed of single equilateral angle steel or composite angle steel. Generally, Q235 (A3F) and Q345 (16Mn Transportation and construction erection are extremely convenient.

For the tower whose height is less than 60m, a foot nail shall be set on one of the main materials of the tower to facilitate the construction workers to climb the tower.