Home / Standards / GB/T 22513-2013 GB/T 22513-2013 Abolished Petroleum and natural gas industries―Drilling and production equipment―Wellhead and christmas tree equipment 石油天然气工业 钻井和采油设备 井口装置和采油树 Standard Type GBT ICS 75.180.10 CCS E92 Status 废止 Issue Date 2013-12-31 Implementation 2014-10-01 Responsible Dept 国家标准委 Drafting Unit N/A