Home / Standards / GB/T 12971.2-2023 GB/T 12971.2-2023 Active Trolley and contact wires for electric traction—Part 2：Aluminium and steel composite contact wires 电力牵引用接触线 第2部分：钢铝复合接触线 Standard Type GBT ICS 29.060.10 CCS K11 Status 现行 Issue Date 2023-08-06 Implementation 2024-03-01 Responsible Dept 中国电器工业协会 Drafting Unit N/A