The telephone pole is the wire pole. Appeared in various rural areas-fields-roads-streets, is one of the important infrastructure of early China.
The early various poles, all from the wood pole start, even including the voltage rating is not too high high-tension pole.
Later, due to the development of steel and reinforced concrete, and technical requirements, the two materials replaced most of the wood poles, and the applicable wood gradually scarce, the city is basically difficult to see the wood rod.
But in some less developed places to set up telephone lines also use wood poles, because the weight of wood is light, easy to set up, and the telephone line load-bearing and pull small, wood rod can be competent, telephone lines if there is change, moving the bar is also convenient. So now there are some wooden telephone poles.