Superseding
Chinese Name	��ѹ�豸��̼�ظֺͺϽ�ֶͼ�
English Name
Chinese Standard Classification
Professional Classification
ICS Classification
Issued on
Implemented on	2010-12-15
Abolished on
Issued by	2010-08-27
Chinese Pages
Word Count	6,000 words

1  Scope
 
This standard specifies the technical requirements, test methods and inspection rules, etc.
for carbon steel and alloy steel forgings for pressure equipments.  
This standard is applicable to carbon steel and alloy steel forgings for pressure
equipments with a design temperature not less than -20  and design pressure below 100Mpa. ��  
 
2  Normative References 
 
The following documents contain provisions which, through reference in this text,
constitute provisions of this standard. For dated references, only the dated versions apply to
this standard. For undated references, the latest edition of the normative document (include all
the amendments) is applicable to this standard.
GB/T 222-2006 Permissible Tolerances for Chemical Composition of Steel Products  
GR/T 223 Methods for Chemical Analysis of Iron, Steel and Alloy  
GB/T 228 Metallic Materials-Tensile Testing at Ambient Temperature (ISO 6892:1998
(E))
GBIT/229-2007Metallic materials-Charpy pendulum impact test method (ISO
148-1:2006)
GB/T 23 1.1 Metallic Materials-Vickers Hardness Test-Part 1: Test Method (1S0
6506-1:2005)
GB/T 4336 Standard Test Method for Spark Discharge Atomic Emission Spectrometric
Analysis of Carbon and Low-Alloy Steel (Routine Method)
GB/T 4338 Metallic Materials-Tensile Testing at Elevated Temperature (ISO 783:1999)
GB/f 6394 Metal-methods for Estimating the Average Grain Size (ASTM E112:1996)
GB/T 10561 Steel-Determination of Content  of Nonmetallic Inclusions-Micrographic
Method Using Standards Diagrams (1S0 4967: 1998)  
GB/T 20066 Steel and Iron-Sampling and Preparation of Samples for the Determination
of Chemical Composition (IS0 14284:1996)
JB/T 4730.3 Non-destructive Testing of Pressure Equipment Part Three: Ultrasonic