Home / Standards / GB/T 24203-2009 GB/T 24203-2009 Abolished Carbon materials - Determination of the true density or true poroous-boiling method 炭素材料真密度、真气孔率测定方法 煮沸法 Standard Type GBT ICS 29.050 CCS Q52 Status 废止 Issue Date 2009-07-08 Implementation 2010-04-01 Responsible Dept 中国钢铁工业协会 Drafting Unit 中国钢铁工业协会