According to its shape, angle steel power tower is generally defined into five types: goblet-shape, cat head, shang-shape, gan-shape and bucket shape. According to its use, it can be defined into: tension towers, straight, corner tower, transposition towers (replace wire phase position tower), terminal tower and crossing tower, and so on.
Their structures are characterized by various tower type space truss structure, bar is mainly composed of single equilateral ,pole parts are combined with angle steel or combination of Angle steel, and material generally are made from (A36) Q235 and Q345 (16 Mn) , roughcast bolts, is used to connect between the bar and bolt shear connection.
The tower is composed of angle steel, connecting plate and bolt, some components such as column foot from several steel plate welded into as an assembly, therefore, anti-corrosion under hot dip galvanized, very easy to transport and install .For the tower with a call height below 60m, a footpin is set on one of the main materials of the tower so as to facilitate the construction workers to ascend the tower.