Home / Standards / GB/T 31049-2022 GB/T 31049-2022 Active Petroleum drilling and production equipment—Top drive system 石油天然气钻采设备 顶部驱动钻井装置 Standard Type GBT ICS 75.180.10 CCS E 92 Status 现行 Issue Date 2022-12-30 Implementation 2023-07-01 Responsible Dept 国家标准委 Drafting Unit N/A