Home / Standards / GB/T 18295-2026 GB/T 18295-2026 Upcoming Microbeam analysis—Analysis method of sandstone sample of petroleum and gas reservoir by scanning electron microscope 微束分析 油气储层砂岩样品扫描电镜分析方法 Standard Type GBT ICS 71.040.40 CCS G04 Status 即将实施 Issue Date 2026-02-27 Implementation 2026-09-01 Responsible Dept 国家标准委 Drafting Unit N/A