Home / Standards / GB/T 9973-2006 GB/T 9973-2006 Abolished Test method for permeability of carbon materials 炭素材料透气度试验方法 Standard Type GBT ICS 29.050 CCS Q52 Status 废止 Issue Date 2006-02-05 Implementation 2006-08-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A