SY 5278-1991
Operating procedures for safety joints used in drilling (English Version)

Standard No.

SY 5278-1991

Language

Chinese, Available in English version

Release Date

1991

Published By

能源部

Latest

SY 5278-1991

SY 5278-1991 history

• 1991 SY 5278-1991 Operating procedures for safety joints used in drilling