Home / Standards / GB/T 43881-2024 GB/T 43881-2024 Active Test method for linear thermal expansion of low-expansion glass—Laser interferometry 低膨胀玻璃线热膨胀系数试验方法 激光干涉法 Standard Type GBT ICS 81.040.01 CCS Q30 Status 现行 Issue Date 2024-04-25 Implementation 2024-11-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A