HB 504-1989
Column (300×600×1000) (English Version)

Standard No.

HB 504-1989

Language

Chinese, Available in English version

Release Date

1989

Published By

Professional Standard - Aviation

Latest

HB 504-1989

Replace

HB 504-1974

HB 504-1989 history

• 1989 HB 504-1989 Column (300×600×1000)
• 1970 HB 504-1974 Column (300×600×1000)