Home / Standards / GB/T 3249-2022 GB/T 3249-2022 Active Test method for Fisher number of metal powders and related compounds 金属及其化合物粉末费氏粒度的测定方法 Standard Type GBT ICS 77.160 CCS H21 Status 现行 Issue Date 2022-03-09 Implementation 2022-10-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A