Home / Standards / GB/T 3810.20-2025 GB/T 3810.20-2025 Active Test method of ceramic tiles—Part 20: Determination of deflection of ceramic tiles for calculating their radius of curvature 陶瓷砖试验方法 第20部分:陶瓷砖曲率半径计算中挠度的测定 Standard Type GBT ICS 91.100.25 CCS Q31 Status 现行 Issue Date 2025-08-29 Implementation 2026-03-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A