NBN 669-F-1966
White iron sheet and black iron sheet. Allowance

Standard No.

NBN 669-F-1966

Release Date

1966

Published By

BE-NBN

Latest

NBN 669-F-1966

NBN 669-F-1966 history

• 1966 NBN 669-F-1966 White iron sheet and black iron sheet. Allowance