Electric Power Transmission Line Tower : 1. Category: O TRANSMISSION ANGLE TOWERS O STEEL PIPE COMBINATION TOWERS O STEEL ... Straight Pole ,Tensile Pole ,Turn Pole Suit for Electricity distribution Shape Conoid ,Multi-pyramidal,Columniform,polygonal or conical Material Usually ... Hot dip galvanized Following ASTM A 123, color polyester power ,painting or any other standard by client required. Joint ...