Home / Standards / GB/T 2293-2019 GB/T 2293-2019 Active The method of quinoline-insolube for pitch products of coal carbonization 焦化沥青类产品喹啉不溶物试验方法 Standard Type GBT ICS 71.080 CCS G18 Status 现行 Issue Date 2019-06-04 Implementation 2020-01-01 Responsible Dept 国家标准委 Drafting Unit N/A