Home / Standards / GB/T 4994-2015 GB/T 4994-2015 Active Iron/Copper-Nickel(Constantan) thermocouple wires 铁—铜镍(康铜)热电偶丝 Standard Type GBT ICS 17.200 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