IS 8166-1988
Specification for rotary drill bits primarily used in coal drilling

Standard No.

IS 8166-1988

Release Date

1989

Published By

IN-BIS

Latest

IS 8166-1988

Scope

Covers the requirements for rotary drill bits used for drilling holes. The tools are princi-pally for use in coal but are applicable to other materials having appropriate driving characteristics. 1.1 This standard also covers the pilot and reamer bits for drilling large diameter holes.

IS 8166-1988 history

• 1989 IS 8166-1988 Specification for rotary drill bits primarily used in coal drilling