GB/T 6414-1999: Castings. System of dimensional tolerances and machining allowances

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Scope

This Standard specifies a system of tolerance grades and required machining
allowance grades for the dimensions of castings.
This Standard is applicable to the dimensions of cast metals and their alloys produced
by various casting manufacturing processes.
This Standard applies both to general tolerances and/or required machining
allowances given on a drawing and to individual tolerances and/or required machining
allowances which are shown immediately following a specific dimension.
The system specified applies when the foundry provides the pattern or die equipment
or accepts responsibility for proving it.

Basic Data

Standard ID	GB/T 6414-1999 (GB/T6414-1999)
Description (Translated English)	Castings. System of dimensional tolerances and machining allowances
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	J04;J31
Classification of International Standard	77.140.80
Word Count Estimation	13,165
Date of Issue	9/3/1999
Date of Implementation	3/1/2000
Older Standard (superseded by this standard)	GB/T 6414-1986; GB/T 11350-1989
Quoted Standard	ISO 1302-1992
Adopted Standard	ISO 8062-1994, MOD
Issuing agency(ies)	State Quality and Technical Supervision
Summary	This standard specifies the mechanical allowance grade level casting dimensional tolerances and requirements.