Home / Standards / GB/T 3654.8-2023 GB/T 3654.8-2023 Active Ferroniobium—Determination of titanium content—Chromotropic acid photometric method and diantipyrylmethane photometric method 铌铁 钛含量的测定 变色酸光度法和二安替比林甲烷光度法 Standard Type GBT ICS 77.100 CCS H11 Status 现行 Issue Date 2023-11-27 Implementation 2024-06-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A