GB 9809-1988

Casing, core barrel and sediment tube threads for hydrogeologic and water well drilling

NORM herausgegeben am 1.1.1988

English, Chinesisch -
Elektronische PDF (343.00 EUR)

The information about the standard:

Designation standards: GB 9809-1988
Note: UNGÜLTIG
Publication date standards: 1.1.1988
Country: Chinese technical standard
Kategorie: Technische Normen GB