Home / Standards / GB/T 4990-2010 GB/T 4990-2010 Active Alloy wires of extension and compensating cables for thermocouples 热电偶用补偿导线合金丝 Standard Type GBT ICS 17.200 CCS N05 Status 现行 Issue Date 2010-12-01 Implementation 2011-05-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A