Home / Standards / GB/T 45012-2024 GB/T 45012-2024 Active Thermal insulating products for industrial installations—Determination of the coefficient of linear thermal expansion at sub-ambient temperatures 工业用绝热制品 低温线性热膨胀系数的测定 Standard Type GBT ICS 91.100.60 CCS Q 25 Status 现行 Issue Date 2024-11-28 Implementation 2025-06-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A