Home / Standards / GB/T 42275-2022 GB/T 42275-2022 Active Hardmetals—Determination of total carbon content—High frequency combustion infrared absorption or thermal conductivity method 硬质合金 总碳量的测定 高频燃烧红外吸收法/热导法 Standard Type GBT ICS 77.160 CCS H16 Status 现行 Issue Date 2022-12-30 Implementation 2023-04-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A