STAS 12720/1-1989
Equipment for hydrogeological drilling DRILLING PIPES FOR COUNTER-FLUSH DRILLING BY ABSORPTION OR AIRLIFT Quality technical requirements

Standard No.

STAS 12720/1-1989

Release Date

1989

Published By

RO-ASRO

Latest

STAS 12720/1-1989

Scope

Prezentul standard stabile?te condi?iile tehnice de calitate ale pr?jinilor de antrenare, pr?jinilor simple, pr?jinilor cu duze ?i pr?jinilor grele folosite ?n forajul hidrogeologic cu circula?ie invers? prin absorb?ie sau prin aer-lift, denumite ?n cup

STAS 12720/1-1989 history

• 1989 STAS 12720/1-1989 Equipment for hydrogeological drilling DRILLING PIPES FOR COUNTER-FLUSH DRILLING BY ABSORPTION OR AIRLIFT Quality technical requirements

STAS 12720/1-1989 -All Parts