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GB/T 35741-2017: Specification of stainless steel forgings for industrial valves
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 35741-2017 | English | 359 |
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Specification of stainless steel forgings for industrial valves
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GB/T 35741-2017
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Basic data | Standard ID | GB/T 35741-2017 (GB/T35741-2017) | | Description (Translated English) | Specification of stainless steel forgings for industrial valves | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J16 | | Classification of International Standard | 23.060.01 | | Word Count Estimation | 18,113 | | Date of Issue | 2017-12-29 | | Date of Implementation | 2018-07-01 | | Regulation (derived from) | National Standards Bulletin 2017 No. 32 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | GB/T 35741-2017: Specification of stainless steel forgings for industrial valves---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Specification of stainless steel forgings for industrial valves
ICS 23.060.01
J16
National Standards of People's Republic of China
Industrial valves stainless steel forgings technical conditions
2017-12-29 Posted
2018-07-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
China National Standardization Administration released
Directory
Foreword Ⅲ
1 Scope 1
2 Normative references 1
3 Structure 1
3.1 Forgings 1
3.2 ring forgings 1
3.3 pie-shaped forgings 1
3.4 bowl-shaped forgings 2
3.5 long neck flange forgings 2
3.6 bar forging 2
3.7 Body Forgings 2
4 technical requirements 3
4.1 smelting 3
4.2 forgings size 3
4.3 chemical composition 3
4.4 mechanical properties 3
4.5 forging 6
4.6 forgings level 6
4.7 forgings heat treatment 6
4.8 forgings process evaluation 6
4.9 Metallographic requirements 6
4.10 Intergranular corrosion 7
4.11 low magnification organization 7
4.12 Sampling rules 7
4.13 welding repair 10
4.14 Non-destructive testing 10
4.15 Appearance Quality 10
5 test methods 10
5.1 appearance inspection 10
5.2 size check 10
5.3 Chemical Composition 10
5.4 Mechanical Properties 10
5.5 Determination of grain size 11
5.6 Non-metallic inclusions inspection 11
5.7 Ferrite content 11
5.8 Intergranular corrosion 11
5.9 low magnification organizations 11
5.10 Non-destructive testing 11
5.11 logo inspection 11
6 Inspection rules 11
6.1 Inspection Items 11
6.2 factory inspection 12
6.3 process qualification test 12
7 mark and quality certificate 12
7.1 mark 12
7.2 Quality Certificate 12
8 protection, packaging and storage and transportation 13
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is proposed by the China Machinery Industry Federation.
This standard by the National Valve Standardization Technical Committee (SAC/TC188) centralized.
This standard was drafted unit. Dalian Dagao Valve Co., Ltd., Anhui Province, Tunxi High Pressure Valve Co., Ltd., Zhejiang Province valve quality
Quantity Inspection Center, Jiangsu Yi Valve Group Co., Ltd., Bethel Valve Group Co., Ltd., Kairui Valve Co., Ltd., Nantong Power Station Valve
Co., Ltd., Qingdao Power Station Valve Co., Ltd.
The main drafters of this standard. Arrow Xiao, Wu Jianbin, Chen Jing second, Qian Yufeng, Jinke rain, Li Yunlong, Zhang Jianhua, Liu Shi, Wei Xue.
Industrial valves stainless steel forgings technical conditions
1 Scope
This standard specifies the industrial valve stainless steel forgings structural form, technical requirements, test methods, inspection rules, signs and quality certification
Book as well as protection, packaging and storage.
This standard applies to industrial valves with pressure stainless steel forgings. Non-pressure stainless steel forgings can be implemented by reference.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
Pressure vessels - Part 4. Manufacture, inspection and acceptance
GB/T 222 steel finished chemical composition tolerance
GB/T 223 (all parts) steel and alloy
GB/T 226 low magnification organizations and defects acid corrosion test
GB/T 228.1 tensile testing of metallic materials - Part 1. room temperature test method
GB/T 229 Charpy pendulum impact test method for metallic materials
GB/T 231.1 Brinell hardness test of metallic materials - Part 1. Test methods
GB/T 4334 metals and alloys corrosion of stainless steel intergranular corrosion test methods
Metallic average grain size GB/T
GB/T 10561 steel non-metallic inclusions in the content of the standard grading test microscopic examination
GB/T 13305 stainless steel α-phase area content metallographic determination
GB/T 20066 Steel and iron - Determination of chemical composition of the sample sampling and sample preparation methods
Valve liquid penetration testing
Valve forgings ultrasonic testing
JB/T 7928 industrial valve delivery requirements
NB/T 47010 stainless steel and heat-resistant steel forgings for pressure equipment
3 structure
3.1 cylindrical forgings
For the cavity cavity, branch, etc., axial length L is greater than its outer diameter D axisymmetric hollow forgings, shown in Figure 1, t is the nominal thickness.
3.2 ring forgings
For take over, seals, etc., the axial length L is not greater than its outer diameter D axisymmetric hollow forgings, as shown in Figure 2, L and t in the small
The nominal thickness.
3.3 pie-shaped forgings
For the valve flap, valve cover, axial length L is not greater than its outer diameter D axisymmetric solid forgings, shown in Figure 3, L is the nominal thickness.
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