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Chinese Standard: 'GBT12225-2018'
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GB/T 12225-2018
ICS 23.060.01
J 16
Replacing GB/T 12225-2005
General Purpose Industrial Valves -
Specification of Copper Alloy Castings
通用阀门 铜合金铸件技术条件
ISSUED ON. MAY 14, 2018
Issued by. State Administration for Market Regulation;
Standardization Administration Committee of the People’s
Republic of China.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative References ... 4 
3 Casting Classification ... 4 
4 Nameplate, Marking Method and Code of Castings ... 5 
5 Technical Requirements ... 6 
6 Test Methods and Inspection Rules ... 11 
7 Marking, Packaging, Transportation and Storage ... 12 
This Standard is drafted in accordance with stipulations in GB/T 1.1-2009.
This Standard serves as a replacement of GB/T 12225-2005 General Purpose
Industrial Valves - Specification of Copper Alloy Castings. In comparison with GB/T
12225-2005, there are several main technical changes as follows.
---Copper alloy nameplates ZCuZn31Al2 and ZCuAl9Fe4Ni4Mn2 are added;
---In mechanical properties, Brinell hardness complies with a new method of
---The illustration of sample for tensile test is modified in accordance with GB/T
---The marking of castings is modified in accordance with GB/T 12220.
This Standard was proposed by China Machinery Industry Federation.
This Standard shall be under the jurisdiction of National Technical Committee (188) on
Valves of Standardization Administration of China (SAC/TC 188).
The responsible drafting organizations of this Standard. Hefei General Machinery
Research Institute, Ningbo AMICO Copper Valves Manufacturing INC., Zhejiang
WANDEKAI Fluid Equipment Science and Technology Co., Ltd., Zhejiang DunAn Valve
Applications Co., Ltd., KAIRUITE Valve Co., Ltd.
The participating drafting organizations of this Standard. Taizhou DUOHE Machinery
Co., Ltd., YORHE Fluid Intelligent Control Co., Ltd., Zhejiang SUMING Valves Co., Ltd.,
Zhejiang VALOGIN Technology Co., Ltd., Taizhou NENG SHI HVAC Technology Co.,
Ltd., Yuhuan Xiuhui Valves Co., Ltd., Boteli Valve Group, Hefei Tongyong
Environmental Control Technology Limited Liabiity Company.
The main drafters of this Standard. Zhang Jiwei, Zheng Xuezhen, Zhazhao, Ding
Chunlan, Li Yunlong, Yao Shengyong, Su Zongyao, Zhang Yinzong, Chen Weifeng,
Liu Wenxiu, Jin Keyu, Hu Chunyan.
The release of previous versions of the standard replaced by this Standard is as follows.
---GB/T 12225-1989, GB/T 12225-2005.
General Purpose Industrial Valves -
Specification of Copper Alloy Castings
1 Scope
This Standard specifies the classification, nameplate, marking method and code,
technical requirements, test methods, inspection rules, marking, packaging,
transportation and storage of copper alloy castings.
This Standard is applicable to valves of sand casting and metal casting (non-pressure
casting) and copper alloy castings of pipe fittings (hereinafter referred to as castings).
2 Normative References
The following documents are indispensable to the application of this Standard. In terms
of references with a specified date, only versions with a specified date are applicable
to this Standard. The latest version (including all the modifications) of references
without a specified date is also applicable to this Standard.
GB/T 228.1 Metallic Materials - Tensile Testing - Part 1. Method of Test at Room
GB/T 231.1 Metallic Materials - Brinell Hardness Test - Part 1. Test Method
GB/T 1176 Casting Copper and Copper Alloys
GB/T 6414 Castings - Dimensional Tolerances and Geometrical Tolerances and
Machining Allowances
GB/T 11351 Mass Tolerances of Casting
GB/T 13927 Pressure Testing for General Purpose Valves
3 Casting Classification
Castings shall be divided into four grades. Please refer to Table 1 for the grade
classification and assessment requirement.
Table 1 -- Casting Assessment Requirement
Casting Grade Assessment Requirement
I Chemical composition, mechanical properties
II Mechanical properties
welding or other methods. However, they shall comply with the drawings or the
stipulation in the contract of ordering. The pressure-containing parts shall satisfy the
test requirement of the shell body.
6 Test Methods and Inspection Rules
6.1 Chemical Composition
6.1.1 The determination of chemical composition of castings shall comply with the
stipulation in ......
Related standard:   GB/T 12234-2019  GB/T 12220-2015
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