... 1, Use for power transfer 2,Quality: ISO9001 3,Electric pressure:10kv-750kv 4,High quality with reasonable price Shape ... 12sides,16sidesCrossarmSingle or double crossarm, dimension as per customers’ requirementMaterial Steel plate Q235, Q345,Q460Q235 equivalent to SS400, S235JO. Q345 equivalent ... required Certificates ISO9001-2008 ProtectionAnti-rust, anti – corrosion Power Transmission Tube Tower