CSN 45 1227-1953
Drilling deep wells. Well drilling with rolled threads

Standard No.

CSN 45 1227-1953

Release Date

1953

Published By

CZ-CSN

Status

Withdraw

Latest

CSN 45 1227-1953

CSN 45 1227-1953 history

• 1953 CSN 45 1227-1953 Drilling deep wells. Well drilling with rolled threads