GB 9811-1988

Drill pipe tool joints for hydrogeologic and water well drilling

STANDARD published on 1.1.1988

English, Chinese -
electronic design (pdf) (648.80 USD)

The information about the standard:

Designation standards: GB 9811-1988
Note: WITHDRAWN
Publication date standards: 1.1.1988
Country: Chinese technical standard
Category: Technical standards GB