Home / Standards / GB/T 20489-2006 GB/T 20489-2006 Active General requirements for perforator materials for oil and gas well 油气井聚能射孔器材通用技术条件 Standard Type GBT ICS 71.100.30 CCS G89 Status 现行 Issue Date 2006-09-12 Implementation 2007-02-01 Responsible Dept 工业和信息化部 Drafting Unit N/A