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陕西省红旗水泥制品厂1964年设计试制成功一种超轻型电杆——8米工字型预应力钢弦混凝土电杆。它主要用于城乡照明与通讯线路上,也可为农村小设备输送动力电。这种电杆由于价格特低、重量甚轻、运输安装方便、抗裂和抗弯性能好等优点,自问世以来,经受了市场的考验。从1965年投产至今,已生产了48万余根,经济效益甚为理想。电杆容许弯矩为700公斤-米,破坏弯矩均大于1400公斤-米。其重量每根290公斤,约为同类环形电杆的80%;出厂价格
In 1964, Shaanxi Hongqi Cement Product Factory successfully designed an ultra-light pole—an 8 meter I-shaped prestressed steel string concrete pole. It is mainly used in urban and rural lighting and communication lines, but also for the transmission of power for small rural equipment. Due to the advantages of extremely low price, light weight, convenient transportation and installation, good crack resistance and good bending resistance, this kind of pole has stood the test of the market since its inception. Since it was put into operation in 1965, more than 480,000 roots have been produced, and the economic benefits are very satisfactory. The allowable bending moment of the pole is 700 kilograms-meter, and the damage bending moment is greater than 1400 kilogram-meters. Its weight is 290 kilograms per rod, which is about 80% of that of a similar ring pole; ex-factory price