Home / Standards / GB/T 24257-2009 GB/T 24257-2009 Active Petroleum and natural gas industries - Content and drafting of a functional specification 石油天然气工业 功能规范的内容与编写 Standard Type GBT ICS N/A CCS E04 Status 现行 Issue Date 2009-07-10 Implementation 2009-12-01 Responsible Dept 国家标准委 Drafting Unit N/A