ObsoleteGo to latest versionDZ/T 0278-2015

DZ 2.2-1987Diamond reaming shells for geological drilling (English PDF)

地质钻探金刚石扩孔器

DZ 2.2 | Evolution and historical versions

Std ID	Title	Status
DZ/T 0278-2015	Diamond reaming shells for geological core drilling	Valid
DZ 2.2-1987	Diamond reaming shells for geological drilling	Obsolete

DZ 2.2-1987 is obsolete. It has been replaced by DZ/T 0278-2015. This page sells the obsolete edition, for projects and contracts that still cite it.

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Level / Type

National · Mandatory

Scope

DZ 2.2-1987 is the English-translated version of 地质钻探金刚石扩孔器.

DZ 2.2-1987 is the Chinese industry standard "Diamond reaming shells for geological drilling". It is obsolete: it has been replaced by DZ/T 0278-2015.

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Document preview — DZ 2.2-1987

Document data

1 Document data

Sector: National Mandatory (industry standard).

Status: obsolete, replaced by DZ/T 0278-2015.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.

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