STAS 6856-1988
Equipments for geological investigation NONADJUSTABLE SCREW GAUGES AND REFERENCE GAUGES FOR INSPECTION OF DRILL PIPES AND UNION NIPPLES FOR PROSPECTING RIGS

Standard No.

STAS 6856-1988

Release Date

1988

Published By

RO-ASRO

Latest

STAS 6856-1988

Scope

Prezentul standard se refer? la calibrele pentru verificarea filetului pr?jinilor de -foraj ?i niplurilor de leg?tur? pentru sondeze STAS 1968-80.

STAS 6856-1988 history

• 1988 STAS 6856-1988 Equipments for geological investigation NONADJUSTABLE SCREW GAUGES AND REFERENCE GAUGES FOR INSPECTION OF DRILL PIPES AND UNION NIPPLES FOR PROSPECTING RIGS