YB 4025-1991
Niobium phosphorus semi-steel (English Version)

Standard No.

YB 4025-1991

Language

Chinese, Available in English version

Release Date

1991

Published By

Professional Standard - Ferrous Metallurgy

Latest

YB 4025-1991

YB 4025-1991 history

• 1991 YB 4025-1991 Niobium phosphorus semi-steel