DIN 21521-1:1990-07

Rock bolts for mining and tunnelling; terms.

STANDARD published on 1.7.1990

The information about the standard:

Designation standards: DIN 21521-1:1990-07
Publication date standards: 1.7.1990
The number of pages: 6
Approximate weight : 18 g (0.04 lbs)
Country: German technical standard
Category: Technical standards DIN