SY 5098-1991
Specifications for timers used in petroleum downhole instruments (English Version)

Standard No.

SY 5098-1991

Language

Chinese, Available in English version

Published By

Professional Standard - Petroleum

Latest

SY 5098-1991

SY 5098-1991 history

• 1970 SY 5098-1991 Specifications for timers used in petroleum downhole instruments