1. Features and Application of Concrete Poles There are many advantages of pre-stressed concrete poles, so they are developing rapidly. Compared with common concrete poles, their strong points are as follows:

A. saving a great deal of steel, about 30-70% (employing cold drawn steel wire can save 30%-60%, employing high stress steel wire can save 40%-69%)
B. crack resistance increased 3-5 times
C. rigidity increased 1-3 times
D. reducing the cost (using cold drawn steel wire can reduce 25%-40%; using high stress steel wire can reduce 12%-21%)
E. good durability, can delay the existence and expansion of cracks
F. protect the environment on which human beings depend on for existence and reduce the deforestation.

2. A Summary of Pre-stressed Poles Development Trend
Pre-pressed concrete poles are produced strictly according to two standards namely GB396-94 Circular Reinforced Concrete Pole and GB4623-94 Circular Pre-stressed Concrete Pole of P.R.C., which guided enterprises and construction units for manufacture.