Home / Standards / GB/T 38111-2019 GB/T 38111-2019 Active Classification, gradation and designation of basalt fiber 玄武岩纤维分类分级及代号 Standard Type GBT ICS 59.100.10 CCS Q36 Status 现行 Issue Date 2019-10-18 Implementation 2020-09-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A