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Chinese National Standard Category: Mine support equipment |
English Title: | Welded drill rod and bit for low-compressive strength rock |
Chinese Title: | 焊接结构软岩钻杆与钻头 |
Standard No.: | MT/T 904-2002 |
Category No.: | D97 |
Issued by: | SETC |
Issued on: | 2002-4-8 |
Implemented on: | 2002-9-1 |
Status: | valid |
Superseded by: | |
Superseded on: | |
Abolished on: | |
Superseding: | |
Word Count: | 3000 words |
Similar Standards: | MT 112-1993 NB/T 10950-2022 NB/T 10954-2022 NB/T 10743-2021 NB/T 10742-2021 MT/T 1192-2020 GB/T 35056-2018 NB/T 51020-2014 GB/T 25974.3-2010 GB 25974.1-2010 GB/T 25974.2-2010 GB 25974.2-2010 GB 25974.3-2010 MT/T 986-2006 MT/T 985-2006 MT 112.1-2006 MT/T 979-2006 MT/T 972-2006 MT/T 942-2005 MT 94-1984 |
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