PULL not used insulators. "Technical Specification for low-voltage power rural" DL499-2001 (hereinafter referred to as "Regulations") Section 6.6.15 stipulates: "through or near wire pole cable must be installed with the same cable line voltage cable insulators insulator. should be installed in 12 meters below the lowest wire poles technical parameters, should ensure that the cable insulators in the following circumstances pull off, pull the insulator from the ground should not be less than 2.5m. "This is to prevent someone shaking or other causes cable wire and cable Pull charged 12 meters causing contact cement poles weight, electric shock accident. This is a provision is absolutely necessary, and it is very strict 12 meters of cement poles, but in practical work and life 12 m concrete poles suppliers, because the cable is not installed distribution line insulators or insulators installed because not meet the "Regulations" still more general requirement exists. To some extent, also planted a security risk. Section in the form of a square pole, octagonal, I-shaped, circular or other shaped cross-section. The most commonly used is the circular cross-section and square cross-section. Pole length is generally 4.5 to 15 m. Annular tapered rod pole and two kinds of equal diameter rod, taper rod tip diameter is generally 100 to 230 mm, taper 1:75; etc. Shank diameter of 300 to 550 mm; wall thickness are both 30 to 60 mm. 12 m concrete poles manufacturers, Henan 12 m concrete poles, towers provided by Kyushu Electric Power, Kyushu Electric Power Tower Henan limited liability company. Kyushu Electric Power Co., Ltd., Henan tower company (www.hnganta.com) strong, credible, in other industries in Henan accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the Kyushu Electric Power tower and you hand into the brilliant, for a better future!