CSN 22 1960-1970
Carbide tipped drill bits for coal

Standard No.

CSN 22 1960-1970

Release Date

1970

Published By

CZ-CSN

Status

Withdraw

Latest

CSN 22 1960-1970

CSN 22 1960-1970 history

• 1970 CSN 22 1960-1970 Carbide tipped drill bits for coal