Home / Standards / GB/T 4702.18-2020 GB/T 4702.18-2020 Active Chromiun metal—Determination of vanadium content—Tantalum reagent trichloromethane extraction spectrophtometry method 金属铬 钒含量的测定 钽试剂三氯甲烷萃取分光光度法 Standard Type GBT ICS 77.100 CCS H11 Status 现行 Issue Date 2020-03-06 Implementation 2020-07-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A