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GB/T 9124.1-2019

Chinese Standard: 'GB/T 9124.1-2019'
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusRelated Standard
GB/T 9124.1-2019English2819 Add to Cart Days<=15 Steel pipe flanges -- Part 1: PN designated Valid GB/T 9124.1-2019
GB/T 9124.1-2019Chinese89 Add to Cart <=1-day [PDF from Chinese Authority, or Standard Committee, or Publishing House]  

   

BASIC DATA
Standard ID GB/T 9124.1-2019 (GB/T9124.1-2019)
Description (Translated English) Steel pipe flanges--Part 1: PN designated
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J15
Classification of International Standard 23.040.60
Word Count Estimation 166,173
Date of Issue 2019-05-10
Date of Implementation 2019-12-01
Older Standard (superseded by this standard) GB/T 9112-2010, GB/T 9113-2010, GB/T 9114-2010, GB/T 9115-2010, GB/T 9116-2010, GB/T 9117-2010, GB/T 9118-2010, GB/T 9119-2010, GB/T 9120-2010, GB/T 9121-2010, GB/T 9122-2010, GB/T 9123-2010, GB/T 9124-2010
Drafting Organization China Machine Productivity Promotion Center, Chaoda Valve Group Co., Ltd., PetroChina East China Design Institute Co., Ltd., Sinopec Engineering Construction Co., Ltd., China Tianchen Engineering Co., Ltd., Baoyi Group Co., Ltd., Wuxi Huaertai Machinery Manufacturing Co., Ltd. Wuxi Flange Forging Co., Ltd., Nanjing Gaoning Forging Flange Factory
Administrative Organization National Pipeline Attachment Standardization Technical Committee (SAC/TC 237)
Proposing organization China Machinery Industry Federation
Issuing agency(ies) State Administration of Markets and China National Standardization Administration

GB/T 9124.1-2019
Steel pipe flanges--Part 1. PN designated
ICS 23.040.60
J15
National Standards of People's Republic of China
Partially replace GB/T 9112~9124-2010
Steel pipe flanges Part 1. PN series
(ISO 7005-1.2011, Pipeflanges-Part 1. Steelflangesfor
Published on.2019-05-10
2019-12-01 implementation
State market supervision and administration
China National Standardization Administration issued
Content
Foreword III
Introduction IV
1 range 1
2 Normative references 1
3 types and parameters 1
3.1 Nominal pressure 1
3.2 nominal size 2
3.3 Steel pipe outer diameter 2
3.4 flange type and code 4
3.5 sealing surface type and code 4
3.6 Flange type and scope of application 6
4 Types and sizes of flanges 14
4.1 Flange sealing surface size 14
4.2 Types and dimensions of flanges 19
5 Technical requirements 109
5.1 Material 109
5.2 Pressure-temperature rating 109
5.3 Dimensional tolerance 125
5.4 Connecting the sealing surface 129
5.5 Fasteners and spacers 130
5.6 Weld end type and size 130
5.7 Processing and Manufacturing 130
6 Test 131
7 Inspection and acceptance 131
7.1 Inspection 131
7.2 Acceptance 132
8 signs and markings 132
8.1 Mark 132
8.2 Mark 132
9 Supply requirements 132
Appendix A (informative) Correspondence between this part and EN1092-1 flange type code and sealing surface code 133
Appendix B (Normative) Welding End Types and Dimensions 136
Appendix C (informative) Reference dimensions for some flanges outside the scope of this section 144
Appendix D (informative) Ordering contract data for flanges 145
Appendix E (informative) EN1092-1 Determination of pressure-temperature ratings 146
Appendix F (informative) Reference quality of flange 149
Appendix G (informative) Pipe number and pipe wall thickness 158
Reference 160
Foreword
GB/T 9124 "Steel Pipe Flange" is divided into two parts.
--- Part 1. PN series;
--- Part 2. Class series.
This part is the first part of GB/T 9124.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB/T 9112-2010 "Steel Pipe Flange Types and Parameters", GB/T 9113-2010 "Integral Steel Pipe Flange",
GB/T 9114-2010 "with neck threaded steel pipe flange", GB/T 9115-2010 "welded steel pipe flange", GB/T 9116-2010
"Neck-welded steel pipe flange", GB/T 9117-2010 "with neck socket welded steel pipe flange", GB/T 9118-2010 "welding ring with neck
Loose steel pipe flange", GB/T 9119-2010 "plate type flat welded steel pipe flange", GB/T 9120-2010 "on the welding ring plate loose steel
Pipe flange", GB/T 9121-2010 "flat welded ring plate loose steel pipe flange", GB/T 9122-2010 "flanged ring plate loose steel pipe
Flange, GB/T 9123-2010 "steel pipe flange cover", GB/T 9124-2010 "steel pipe flange technical conditions" PN series method
Lan, the content of the Class series flange is included in the second part of GB/T 9124, compared with the GB/T 9112~9124-2010 series standard
To change as follows.
--- Supplemented and revised the contents of the PN series flanges in the.2010 edition of the standard;
--- The nominal pressure range of the flange cover is expanded from PN2.5~PN160 to PN2.5~PN400;
--- The nominal size range of the neck threaded flange is changed from DN10~DN1000 to DN10~DN150;
--- Revised the outer diameter of the steel pipe, the flange size has also been revised accordingly;
--- Supplemented the pressure-temperature rating of some flange materials and materials;
---Modified and improved the technical requirements and other related content;
--- Added method for determining pressure-temperature ratings.
This part uses the redrafting method with reference to ISO 7005-1.2011 "Pipe Flanges Part 1. Steel for Industrial and General Purpose Piping Systems
The degree of conformity with ISO 7005-1.2011 is not equivalent.
This part was proposed by the China Machinery Industry Federation.
This part is under the jurisdiction of the National Pipeline Attachment Standardization Technical Committee (SAC/TC237).
This section drafted by. China Machine Productivity Promotion Center, Chaoda Valve Group Co., Ltd., PetroChina East China Design Institute Co., Ltd.,
Sinopec Engineering Construction Co., Ltd., China Tianchen Engineering Co., Ltd., Baoyi Group Co., Ltd., Wuxi Huaertai Machinery Manufacturing Co., Ltd.
Company, Wuxi Flange Forging Co., Ltd., Nanjing Gaoning Forging Flange Factory.
The main drafters of this section. Qiu Xiaolai, Li Junying, Liu Hongfu, Chen Yongliang, Liu Jianxin, Liu Jian, Zhang Xiaozhong, Feng Feng, Li Zhongyun, Li Gangliang,
Yang Li.
The previous versions of the standards replaced by this section are.
---GB/T 9112~9124-1988, GB/T 9112~9124-2000, GB/T 9112~9124-2010.
introduction
GB/T 9112~9124-2010 series of standards are mainly divided into 13 standards according to the type of flange, revised according to the nominal pressure of the flange
Steel Pipe Flange Part 2. Class Series.
ISO 7005-1.2011 "Pipe Flanges Part 1. Steel Flanges for Industrial and General Purpose Piping Systems"
Language and definitions, procurement specifications, processes, pressure limits, materials, precautions during use, other precautions, installation instructions, purchaser prescription letters
Technical content such as interest rate, compared with ISO 7005-1.1992, ISO 7005-1.2011 no longer specifies detailed technical parameters, but requires size,
Materials, temperature ratings, etc. directly refer to the European Committee for Standardization EN1092-1 "Flange and its connecting pipes, valves, pipes
Round Flanges for Accessories and Accessories, PN Marking Part 1. Steel Flanges, American Society of Mechanical Engineers Standard ASMEB 16.5
Lan and flange fittings (NPS1/2~NPS24) and ASMEB16.47 "large diameter steel pipe flanges (NPS26~NPS60)".
The flange dimensions specified in this section are interchangeable with EN1092-1.2018, the technical requirements are basically the same, and the mains of EN1092-1.2018
The difference is as follows.
--- This section is written in a different format than EN1092-1.2018;
--- According to the requirements of users in China, the nominal size range of the flange has been appropriately expanded, for example. the nominal pressure range has been increased.
Flange size for DN20 and DN32 of PN160~PN400;
--- According to the requirements of users in China, this part increases the form and size of the flange of the ring joint surface;
--- Added the type and size of the neck socket weld flange;
---EN1092-1..2018 steel pipe outer diameter is only one series, this part of the steel pipe outer diameter has two series, of which series I
The outer diameter of DN10~DN2400 steel pipe is basically the same as that of EN1092-1.2018, but the difference between DN65 and DN125 is different.
Different, the outer diameter of the series DN2600~DN4000 steel pipe is the same as the outer diameter of the steel pipe of EN1092-1.2018;
---Flange material is different from EN1092-1.2018. This part adopts the flange material of our brand and refers to EN1092-1.2018.
Determine the pressure-temperature rating of our materials;
--- Increased the ordering contract data of the flange;
--- Increased pipe gauge number and steel pipe wall thickness;
--- Increased the correspondence between this part and EN1092-1 flange type code and sealing surface code.
Steel pipe flanges Part 1. PN series
1 Scope
This part of GB/T 9124 specifies the type and parameters, type and size, technical requirements of PN series steel pipe flanges and flange covers.
Test, inspection and acceptance, marking and marking, supply requirements.
This section applies to steel pipe flanges and flange covers with nominal pressures PN2.5~PN400 and nominal sizes DN10~DN4000.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 152.4 fastener hex head bolt and hex nut countersink
GB/T 700 carbon structural steel
GB/T 711 high quality carbon structural steel hot rolled thick steel plate and wide steel strip
GB/T 712 structural steel for marine and offshore engineering
GB/T 713 steel plate for boiler and pressure vessel
Definition and selection of GB/T 1047 pipe component nominal size
Definition and selection of GB/T 1048 pipe component nominal pressure
GB/T 1804 General tolerances No tolerances for linear and angular dimensions tolerances
GB/T 3531 low alloy steel plate for low temperature pressure vessel
GB/T 4237 stainless steel hot rolled steel sheet and strip
GB/T 7306.1 55° sealed pipe threads - Part 1. Cylindrical internal and conical external threads
GB/T 9125 pipe flange connection fastener
GB/T 12228 general valve carbon steel forgings technical conditions
GB/T 12229 general valve carbon steel casting technical conditions
GB/T 12230 general valve stainless steel casting technical conditions
GB/T 12716 60° conical pipe thread
GB/T 14976 stainless steel seamless pipe for fluid transportation
GB/T 16253 pressure steel castings
Technical conditions for JB/T 5263 power station valve castings
Technical conditions for JB/T 7248 low temperature steel castings for valves
NB/T 47008 Carbon steel and alloy steel forgings for pressure equipment
NB/T 47009 Alloy steel forgings for low temperature pressure equipment
NB/T 47010 Stainless steel and heat resistant steel forgings for pressure equipment
3 types and parameters
3.1 Nominal pressure
3.1.1 The definition of nominal pressure can be found in GB/T 1048.
Related standard:   GB/T 9124.2-2019  GB/T 9125.2-2020
Related PDF sample:   GB/T 1048-2019  GB/T 1047-2019
   
 
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