Thickness:1 mm to 30 mm Type:Straight Pole ,Tensile Pole ,Turn Pole Suit for:Electricity distribution Shape:Conoid ,Multi-pyramidal , Columniform,polygonal or conical Material:Usually Q345B/A572,minimum yield strength>=345n/mm2 As well as Hot rolled coil from Q460 ,ASTM573 GR65, GR50 ,SS400, SS490, to ST52 Power:10 KV ~550 KV Tolerance of dimension:+- 2% Safety Factor:Safety factor for conducting ...