GB/T 20704-2006

Rock drilling - Rotary drill-rods and rotary drill-bits for dry drilling - Connecting dimensions

NORMA vydána dne 20.12.2006

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The information about the standard:

Designation standards: GB/T 20704-2006
Publication date standards: 20.12.2006
Country: Chinese technical standard
Kategorie: Technické normy GB