Home / Standards / GB/T 14949.5-2021 GB/T 14949.5-2021 Active Manganese ores一Determination of titanium content一Diantipyrylmethane spectrophotometric method 锰矿石 钛含量的测定 二安替吡啉甲烷分光光度法 Standard Type GBT ICS 73.060.20 CCS D32 Status 现行 Issue Date 2021-05-21 Implementation 2021-12-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A