Home / Standards / DZ/T 0109-1994 DZ/T 0109-1994 Active 水文水井钻探用钻铤 Standard Type DZ ICS N/A CCS N/A Status Active Issue Date 1994-06-08 Implementation 1994-06-08 Centralized Committee 地质矿产部 Issuing Authority 地质矿产部