Home / Standards / GB/T 20174-2006 GB/T 20174-2006 Abolished Petroleum and natural gas industries - Drilling and production equipment - Drill-through equipment 石油天然气工业 钻井和采油设备 钻通设备 Standard Type GBT ICS 75.180.10 CCS E92 Status 废止 Issue Date 2006-03-29 Implementation 2006-09-01 Responsible Dept 中国石油天然气集团公司 Drafting Unit N/A