JB/T 9179.4-1999
Machining allowances and tolerances of open forgings on hydraulic press.Disk and punched hole (English Version)

Standard No.

JB/T 9179.4-1999

Language

Chinese, Available in English version

Release Date

1999

Published By

Professional Standard - Machinery

Status

Be replaced 2014-07

Replace By

JB/T 9179.4-2013

Latest

JB/T 9179.4-2013

Scope

This standard specifies the allowances and tolerances for free-forged discs and punched forgings on hydraulic presses. This standard is applicable to part size relationships H0≤1.0 D and d≤0.5 D without holes and punched free forgings.

JB/T 9179.4-1999 history

• 2013 JB/T 9179.4-2013 Machining allowances and tolerances of open die forgings on hydraulic press.Part 4: Disk and punched hole
• 1999 JB/T 9179.4-1999 Machining allowances and tolerances of open forgings on hydraulic press.Disk and punched hole