Home / Standards / GB/T 9966.2-2020 GB/T 9966.2-2020 Active Test methods for natural stone—Part 2:Determination of dry,wet and after freezing flexural strength 天然石材试验方法 第2部分:干燥、水饱和、冻融循环后弯曲强度试验 Standard Type GBT ICS 91.100.15 CCS Q21 Status 现行 Issue Date 2020-03-06 Implementation 2021-02-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A