Home / Standards / GB/T 2903-2015 GB/T 2903-2015 Active Copper/Copper-Nickel(Constantan) thermocouple wires 铜—铜镍(康铜)热电偶丝 Standard Type GBT ICS 17.200.20 CCS N11 Status 现行 Issue Date 2015-05-15 Implementation 2015-12-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A