Home / Standards / GB/T 20673-2006 GB/T 20673-2006 Active Cellular plastics - Determination of the coefficient of linear thermal expansion of rigid materials at sub-ambient temperatures 硬质泡沫塑料 低于环境温度的线膨胀系数的测定 Standard Type GBT ICS 83.100 CCS G32 Status 现行 Issue Date 2006-09-18 Implementation 2007-05-01 Responsible Dept 中国轻工业联合会 Drafting Unit 中国轻工业联合会