Home / Standards / GB/T 4184-2021 GB/T 4184-2021 Active Tungsten-rhenium alloy wires 钨铼合金丝 Standard Type GBT ICS 31.030 CCS L90 Status 现行 Issue Date 2021-12-31 Implementation 2022-07-01 Responsible Dept 国家标准委 Drafting Unit N/A