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Rock bolts for mining and tunnel support; general specifications for steel-bolts; tests, testing methods.
STANDARD published on 1.2.1993
Designation standards: DIN 21521-2:1993-02
Publication date standards: 1.2.1993
SKU: NS-190667
The number of pages: 7
Approximate weight : 21 g (0.05 lbs)
Country: German technical standard
Category: Technical standards DIN
Gebirgsanker für den Bergbau und den Tunnelbau; Allgemeine Anforderungen für Gebirgsanker aus Stahl; Prüfungen, Prüfverfahren.
WITHDRAWN
1.5.2003
WITHDRAWN
1.5.2003
WITHDRAWN
1.5.2003
WITHDRAWN
1.5.2003
1.7.1990
1.7.1990
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