DZ 25-1983
Drill pipe lock joint for geological drilling (English Version)

Standard No.

DZ 25-1983

Language

Chinese, Available in English version

Published By

Professional Standard - Geology

Latest

DZ 25-1983

Scope

This standard is applicable to geological drilling drill pipe lock joints mainly used for drilling with carbide and steel particles.

DZ 25-1983 history

• 1970 DZ 25-1983 Drill pipe lock joint for geological drilling