GB/T 9126.1-2023 English PDF

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GB/T 9126.1-2023: Non-metallic flat gaskets for pipe flanges - Part 1: PN designated
Status: Valid

GB/T 9126.1: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 9126.1-2023	349	Add to Cart	4 days	Non-metallic flat gaskets for pipe flanges - Part 1: PN designated	Valid
GB/T 9126-2008	479	Add to Cart	3 days	Dimensions of non-metallic flat gaskets for pipe flanges	Obsolete
GB/T 9126-2003	399	Add to Cart	3 days	Pipe flange with non-metallic flat gasket size	Obsolete
GB/T 9126.1-1988	199	Add to Cart	2 days	Asbestes rubber gaskets for steel pipe flanges with full face	Obsolete

Similar standards

GB/T 12385   GB/T 9125.1   GB/T 9125.2   GB/T 9128.1   GB/T 9128.2   GB/T 9126.2   

Basic data

Standard ID: GB/T 9126.1-2023 (GB/T9126.1-2023)
Description (Translated English): Non-metallic flat gaskets for 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: 18,182
Date of Issue: 2023-09-07
Date of Implementation: 2024-04-01
Older Standard (superseded by this standard): GB/T 9126-2008,GB/T 9129-2003; ���ִ��棺GB/T 9126-2008; GB/T 9129-2003
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 9126.1-2023: Non-metallic flat gaskets for pipe flanges - Part 1: PN designated

---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.
ICS 23.040.60 CCSJ15 National Standards of People's Republic of China Partially replaces GB/T 9126-2008, GB/T 9129-2003 Non-metallic flat gaskets for pipe flanges Part 1.PN Series Part 1.PNdesignated Published on 2023-09-07 2024-04-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration Committee

Table of contents

PrefaceⅠ Introduction II 1 Scope 1 2 Normative reference documents 1 3 Terms and Definitions 1 4 Symbols and abbreviations1 5 Type 2 6 Material 3 7 Requirement 3 7.1 Appearance 3 7.2 Dimension 3 7.3 Dimensional limit deviation 10 7.4 Performance10 8 Inspection methods 11 8.1 Appearance 11 8.2 Size 11 8.3 Dimensional limit deviation 11 8.4 Performance11 9 Inspection Rules 11 9.1 Inspection11 9.2 Sampling and determination rules 12 10 Marks and Logos 12 10.1 Mark 12 10.2 Flag 12 11 Packaging, storage and transportation 13 11.1 Packaging13 11.2 Storage and transportation13 Appendix A (informative) Stress relaxation of non-metallic flat gaskets of some commonly used materials 14 Reference 15

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. This document is Part 1 of GB/T 9126 "Non-metallic flat gaskets for pipe flanges". GB/T 9126 has released the following parts. ---Part 1.PN series; ---Part 2.Class Series. This document partially replaces GB/T 9126-2008 "Dimensions of non-metallic flat gaskets for pipe flanges" and GB/T 9129-2003 "Pipe flanges" Technical Conditions for Non-metallic Flat Gaskets", compared with GB/T 9126-2008 and GB/T 9129-2003, except for structural adjustment and editing In addition to the modifications, the main technical changes are as follows. a) The asbestos rubber sheet gasket material is deleted (see 3.1 of GB/T 9129-2003); b) Added gasket type (see Chapter 5); c) Added that flat ring gaskets can be equipped with metal inner edges and related regulations (see Chapter 5, 6.3); d) Added modified polytetrafluoroethylene and expanded polytetrafluoroethylene materials and requirements (see 6.1 and 6.2); e) The gasket size and gasket thickness have been changed (see Table 1~Table 4, Table 1~Table 4 of GB/T 9126-2008); f) Added (DN700~DN4000)PN2.5, (DN700~DN3600)PN6, (DN2200~DN3000) Dimensions of gaskets for PN10 flat flange (see Table 1); g) Delete the gasket dimensions for PN25 and PN40 flat flanges (see Table 1 of GB/T 9126-2008); h) The dimensions of gaskets for PN25 raised face flanges (DN1200~DN2000) are deleted (see Table 2 of GB/T 9126-2008); i) Added the dimensions of gaskets for DN175, DN225, and PN40 raised face flanges (see Table 2); j) Added DN175(PN10~PN63), DN225(PN10~PN63), (DN1200~DN2000) PN10 and (DN1200~DN2000) Gasket dimensions for PN16 concave and convex flanges (see Table 3); k) Added the dimensions of gaskets for (DN1200~DN2000) PN10 and (DN1200~DN2000) PN16 tongue and groove flanges. inches (see Table 4); l) Deleted Class series gasket dimensions (see Table 5~Table 8 of GB/T 9126-2008); m) Changed the gasket size limit deviation (see Table 5 and Table 6, Table 5 and Table 6 of GB/T 9129-2003); n) Added storage period and related regulations for rubber and asbestos-free fiber gaskets (see 11.2.2). Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents. This document is proposed by China Machinery Industry Federation. This document is under the jurisdiction of the National Technical Committee on Standardization of Pipe Accessories (SAC/TC237). This document was drafted by. China Machinery Productivity Promotion Center Co., Ltd., Ningbo Tiansheng Seals Co., Ltd., Zhejiang Cathay Xiaoxing Sealing Materials Material Co., Ltd., Guangzhou Dongshan Nanfang Seal Co., Ltd., Cixi Hengli Sealing Material Co., Ltd., PetroChina East China Design Institute Ltd. The main drafters of this document. Qiu Kuanheng, Feng Feng, Wu Yimin, Li Xinggen, Wu Kaijun, Lu Wenming, Liu Hongfu, and Li Xiaoqin. The previous versions of this document and the documents it replaces are as follows. ---GB/T 9126-1988 was first released in 1988, and was incorporated into GB/T 2502-1989 "Marine Usage Law" in the first revision in.2008 Blue soft washer (fourth position)》; ---GB/T 9129-1988 was first released in 1988 and revised for the first time in.2003; ---This is the second revision.

Introduction

Non-metallic flat gasket is a commonly used sealing gasket in flange joints. GB/T 9126-2008 "Non-metallic flat gaskets for pipe flanges It has been more than ten years since the release and implementation of GB/T 9129-2003 "Technical Conditions for Non-metallic Flat Gaskets for Pipe Flanges". During this period, due to gasket With the innovation of sheet materials, the applicable pipe flange standard has been revised twice. Therefore, in order to be consistent with the PN and Class of the current pipe flange standard The two series are compatible, and the standards of non-metallic flat gaskets are also divided into PN series and Class series accordingly. GB/T 9126 aims to establish the various technical elements necessary for the design, manufacture and selection of non-metallic flat gaskets, and is intended to be composed of two parts. ---Part 1.PN series. The purpose is to establish the specifications, dimensions and technical requirements of PN series non-metallic flat gaskets. ---Part 2.Class Series. The purpose is to establish the specifications, dimensions and technical requirements of Class series non-metallic flat gaskets. Non-metallic flat gaskets for pipe flanges Part 1.PN Series

1 Scope

This document specifies the types, materials, requirements, test methods, inspection rules, markings and markings of non-metallic flat gaskets for PN series pipe flanges. Records, packaging, storage and transportation. This document applies to non-metallic flat gaskets with nominal dimensions less than or equal to DN4000 and nominal pressures PN2.5~PN63.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document. GB/T 5574 Industrial rubber sheet GB/T 12385-2008 Gasket sealing performance test method for pipe flanges GB/T 12621-2008 Gasket stress relaxation test method for pipe flanges GB/T 12622-2008 Test method for compression rate and rebound rate of gaskets for pipe flanges JC/T 2052 Roll-pressed asbestos-free fiber gasket material QB/T 5257 Polytetrafluoroethylene (PTFE) sheet

3 Terms and definitions

There are no terms or definitions to be defined in this document.

4 Symbols and abbreviations

The following symbols and abbreviations apply to this document. b. Inner wrapping width, unit is millimeter (mm) D. Gasket outer diameter, unit is millimeter (mm) d. Gasket inner diameter, unit is millimeter (mm) K. Bolt hole center circle diameter, unit is millimeter (mm) L. Bolt hole diameter, unit is millimeter (mm) n. Number of bolt holes, unit is units T. gasket thickness, unit is millimeter (mm) CR. Chloroprene Rubber (ChloropreneRubber) FKM. Fluororubber (Fluororubber) ......

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