STAS 12720/2-1989
Equipment for hydrogeological drilling ENTRAINMENT DRILL PIPES FOR COUNTER-FLUSH DRILLING BYABSORPTION OR AIRLIFT Dimensions

Standard No.

STAS 12720/2-1989

Release Date

1989

Published By

RO-ASRO

Latest

STAS 12720/2-1989

Scope

Prezentul standard stabile?te dimensiunile pr?jinilor de antrenare pentru foraj cu circula?ia invers? prin absorb?ie sau aerlift, folosite la forajul sondelor hidrogeologice.

STAS 12720/2-1989 history

• 1989 STAS 12720/2-1989 Equipment for hydrogeological drilling ENTRAINMENT DRILL PIPES FOR COUNTER-FLUSH DRILLING BYABSORPTION OR AIRLIFT Dimensions

STAS 12720/2-1989 -All Parts