Home / Standards / GB/T 35053-2018 GB/T 35053-2018 Active Sealed coring method for determination of coalbed methane content 煤层气含量测定用密闭取心方法 Standard Type GBT ICS 73.040 CCS D20 Status 现行 Issue Date 2018-05-14 Implementation 2018-09-01 Responsible Dept 中国煤炭工业协会 Drafting Unit N/A