Home / Standards / GB/T 31468-2015 GB/T 31468-2015 Active Petroleum and natural gas industries—Pipeline transportation systems—Recommended practice for pipeline life extension 石油天然气工业 管道输送系统 管道延寿推荐作法 Standard Type GBT ICS 75.200 CCS E98 Status 现行 Issue Date 2015-05-15 Implementation 2015-08-01 Responsible Dept 国家标准委 Drafting Unit N/A