Home / Standards / GB/T 1969-1996 GB/T 1969-1996 Active Test method for permeability of porous ceramic 多孔陶瓷渗透率试验方法 Standard Type GBT ICS 81.060.20 CCS Q32 Status 现行 Issue Date 1996-09-13 Implementation 1997-04-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A