Home / Standards / GB/T 4000 GB/T 4000 Active Determination of coke reactivity index (CRI) and coke strength after reaction (CSR) 焦炭反应性及反应后强度试验方法 Standard Type GBT ICS 75.160.10 CCS H32 Status 现行 Issue Date 2017-10-14 Implementation 2018-05-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委