GB/T 20704-2006

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

STANDARD published on 20.12.2006

English, Chinese -
electronic design (pdf) (136.80 USD)

The information about the standard:

Designation standards: GB/T 20704-2006
Publication date standards: 20.12.2006
Country: Chinese technical standard
Category: Technical standards GB