MT/T 521-1995Conventional coal mine tunnel drill geological drilling (English PDF)
煤矿坑道常规地质钻探用钻杆
MT/T 521 | Evolution and historical versions
| Std ID | Title | Status |
|---|---|---|
| MT/T 521-2025 | Standard drill rod for drilling in underground coal mine | Valid |
| MT/T 521-2006 | Standard drill rod for drilling in coal mine gallery | Obsolete |
| MT/T 521-1995 | Conventional coal mine tunnel drill geological drilling | Obsolete |
MT/T 521-1995 is obsolete. It has been replaced by MT/T 521-2006. This page sells the obsolete edition, for projects and contracts that still cite it.
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Issued by
National Mine Safety Administration
Level / Type
National · Recommended
Issue date
January 15, 1996
Implementation date
May 1, 1996
Scope
MT/T 521-1995 is the English-translated version of 煤矿坑道常规地质钻探用钻杆.
MT/T 521-1995 is the Chinese industry standard "Conventional coal mine tunnel drill geological drilling". It was issued on January 15, 1996 by the National Mine Safety Administration, and took effect on May 1, 1996. It is obsolete: it has been replaced by MT/T 521-2006.
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Document preview — MT/T 521-1995
National Standard of the People's Republic of China
Issued by: National Mine Safety Administration
Contents
- Document data
1 Document data
Sector: Coal (industry standard).
Issuing body: National Mine Safety Administration.
Date of issue: 1996-01-15.
Date of implementation: 1996-05-01.
Status: obsolete, replaced by MT/T 521-2006.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.
Referenced standards
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MT/T 521-1995
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