Home / Standards / DZ/T 0053-1993 DZ/T 0053-1993 Active 液动冲击回转钻探技术规程 Standard Type DZ ICS N/A CCS N/A Status Active Issue Date 1993-02-19 Implementation 1993-07-01 Centralized Committee 地质矿产部 Issuing Authority 地质矿产部