GB/T 4256-1984
Core drills with parallel shanks

Be replaced

Standard No.

GB/T 4256-1984

Language

Chinese

Release Date

1984

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Replace By

GB/T 4256-2004

Lastest

GB/T 4256-2022

Scope

Straight Shank Reaming Drills This standard is formulated with reference to the international standard ISO 7079-1981 "Straight Shank and Tapered Shank Reaming Drills".

GB/T 4256-1984 history

• 2022 GB/T 4256-2022 Core drills with parallel shanks and with Morse taper shanks
• 2004 GB/T 4256-2004 Core drills with parallel shanks and with Morse taper shanks
• 1984 GB/T 4256-1984 Core drills with parallel shanks