Home / Standards / GB/T 1429-2009 GB/T 1429-2009 Abolished Carbon materials-determination of the ash content 炭素材料灰分含量的测定方法 Standard Type GBT ICS 29.050 CCS Q52 Status 废止 Issue Date 2009-07-15 Implementation 2010-04-01 Responsible Dept 中国钢铁工业协会 Drafting Unit 中国钢铁工业协会