Home / Standards / GB/T 4333.1-2019 GB/T 4333.1-2019 Active Ferrosilicon—Determination of silicon content—Perchloric acid dehydration gravimetric method and potassium fluosilicate volumetric method 硅铁 硅含量的测定 高氯酸脱水重量法和氟硅酸钾容量法 Standard Type GBT ICS 77.100 CCS H11 Status 现行 Issue Date 2019-08-30 Implementation 2020-07-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A