Home / Standards / GB/T 38396-2019 GB/T 38396-2019 Active Pitch products of coal carbonization—Determination of mesophase content—Microscopical analysis by reflected light 焦化沥青类产品 中间相含量的测定 光反射显微分析方法 Standard Type GBT ICS 71.080 CCS G18 Status 现行 Issue Date 2019-12-31 Implementation 2020-07-01 Responsible Dept 国家标准委 Drafting Unit N/A