Home / Standards / GB/T 28993-2012 GB/T 28993-2012 Active Standard test methods for mechanical properties of structural lumber 结构用锯材力学性能测试方法 Standard Type GBT ICS 91.080.20 CCS P23 Status 现行 Issue Date 2012-12-31 Implementation 2013-06-01 Responsible Dept 国家林草局 Drafting Unit N/A