DZ 2.2-1987
Geological Drilling Diamond Reamer (English Version)
- Standard No.
- DZ 2.2-1987
- Language
- Chinese, Available in English version
- Published By
- Professional Standard - Geology
- Status
- 2015-07
- Replace By
- DZ/T 0278-2015
- Latest
- DZ/T 0278-2015
- Scope
- This standard is applicable to various geological drill bits and supporting reamers for engineering drill bits in accordance with the DZ 2.1-1987 "Diamond Drill Bits for Geological Drilling" standard. The threaded connection shall be implemented in accordance with the DZ 1.1~1.3-1984 "Geological Core Drilling Pipe Threads" standard.
DZ 2.2-1987 history
- 2015 DZ/T 0278-2015 Diamond reaming shells for geological core drilling
- 1970 DZ 2.2-1987 Geological Drilling Diamond Reamer
DZ 2.2-1987 Geological Drilling Diamond Reamer was changed to DZ/T 0278-2015 Diamond reaming shells for geological core drilling.
