1, Use for power transfer 2,Quality: ISO9001 3,Electric pressure:10kv-750kv 4,High quality with reasonable price Shape ... to GB/T 1591-1994.fabrication processCut plate, bending ,forming, automatic welding, drill holes ,quality check before galvanized, hot dip galvanized ... by client required Certificates ISO9001-2008 ProtectionAnti-rust, anti – corrosion Power Transmission Tube Tower