Home / Standards / GB/T 41741-2022 GB/T 41741-2022 Active Grading and test method for attapulgite clay 凹凸棒石黏土分级及测试方法 Standard Type GBT ICS 73.080 CCS Q69 Status 现行 Issue Date 2022-10-14 Implementation 2023-02-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A