... high opinion from our clients.Specification: TypeStraight Pole ,Tensile Pole ,Turn PoleSuit forPower pole for electricity transmission lineShapeConoid ,Multi-pyramidal, ... ASTM573 GR65, GR50 ,SS400, SS490ST52Torlance of dimenstion+- 2%Power35 KV ~550 KVSafety FactorSafety factor for conducting wine : 8Safety factor ... delivery for reference 220KV power transmission lines galvanized steel pole