STAS 13003-1991
Equipment for hydrogeological drilling MULTI-STAGE ROLLER BITS

Standard No.

STAS 13003-1991

Release Date

1991

Published By

RO-ASRO

Latest

STAS 13003-1991

Scope

Prezentul standard se refer? la sapele cu role etajate destinate forajului sondelor cu diametrul mare si ad?ncimi mici, la care evacuarea sfar?m?turilor de roc? se face prin interiorul sapei.

STAS 13003-1991 history

• 1991 STAS 13003-1991 Equipment for hydrogeological drilling MULTI-STAGE ROLLER BITS