... ,ASTM573 GR65, GR50 ,SS400, SS490, to ST52 Power:10 KV ~550 KV Tolerance of dimension:+- 2% Safety Factor:Safety factor for conducting ... Following ASTM A 123, color polyester power or any other standard by client required. Joint of Poles:Insert mode,innerflange mode,face ... to face joint mode . Design of pole:Against earthquake of 8 grade Wind Speed:160 Km/Hour . 30 ...