GB/T 9126.2-2023 English PDFUS$349.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 9126.2-2023: Non-metallic flat gaskets for pipe flanges - Part 2: Class designated Status: Valid GB/T 9126.2: Historical versions
Basic dataStandard ID: GB/T 9126.2-2023 (GB/T9126.2-2023)Description (Translated English): Non-metallic flat gaskets for pipe flanges - Part 2: Class designated Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: J15 Classification of International Standard: 23.040.60 Word Count Estimation: 18,179 Date of Issue: 2023-09-07 Date of Implementation: 2024-04-01 Older Standard (superseded by this standard): GB/T 9126-2008,GB/T 9129-2003; ���ִ��棺GB/T 9126-2008; GB/T 9129-2003 Issuing agency(ies): State Administration for Market Regulation, China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 9126.2-2023: Non-metallic flat gaskets for pipe flanges - Part 2: Class 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 2.Class Series Published on 2023-09-07 2024-04-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration Committee Table of contentsPreface III Introduction IV 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 7 7.4 Performance8 8 Inspection methods 8 8.1 Appearance 8 8.2 Size 9 8.3 Dimensional limit deviation 9 8.4 Performance9 9 Inspection Rules 9 9.1 Inspection 9 9.2 Sampling and determination rules 9 10 Marks and Logos 9 10.1 Mark 9 10.2 Logo 10 11 Packaging, storage and transportation10 11.1 Packaging10 11.2 Storage and transportation 11 Appendix A (informative) Stress relaxation of non-metallic flat gaskets of some commonly used materials 12 Reference 13ForewordThis 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 2 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) Added gasket dimensions for DN550 (NPS22) flat flange, raised surface flange and concave and convex surface flange (see Table 1~Table 3); f) The gasket (inner diameter) size and gasket thickness have been modified (see Table 1~Table 4, Table 5~Table 8 of GB/T 9126-2008); g) Delete the PN series gasket dimensions (see Table 1~Table 4 of GB/T 9126-2008); h) Changed the gasket size limit deviation (see Table 5 and Table 6, Table 5 and Table 6 of GB/T 9129-2003); i) 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. Ningbo Tiansheng Seals Co., Ltd., Zhongji Productivity Promotion Center Co., Ltd., Zhejiang Cathay Xiaoxing Sealing Materials Materials Co., Ltd., Cixi Hengli Sealing Materials Co., Ltd., Guangzhou Dongshan Southern Seals Co., Ltd., PetroChina East China Design Institute Ltd. The main drafters of this document. Qiu Kuanheng, Feng Feng, Wu Yimin, Li Xinggen, Wu Shuji, Xu Shaohuan, Liu Hongfu, Luo Wenjun. The previous versions of this document and the documents it replaces are as follows. ---First published as GB/T 9126-1988 in 1988, and merged into GB/T 2502-1989 "Marine Flange soft gasket (four-position)》; ---First published as GB/T 9129-1988 in 1988, first revised in.2003; ---This is the second revision.IntroductionNon-metallic flat gasket is a commonly used sealing gasket in flange joints. GB/T 9126-2008 "Non-metallic flat gaskets for pipe flanges Dimensions" and GB/T 9129-2003 "Technical Conditions for Non-metallic Flat Gaskets for Pipe Flanges" were promulgated and implemented for more than ten years. During this period, due to the use of gaskets With the introduction of new materials, the applicable pipe flange standards have been revised twice. Therefore, in order to be consistent with the current pipe flange standards of PN and Class Compatible with each series, 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 2.Class Series1 ScopeThis document specifies the types, materials, requirements, test methods, inspection rules, markings and logo, packaging, storage and transportation. This document applies to non-metallic flat gaskets with nominal pressures of Class150 and Class300.2 Normative reference documentsThe 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) sheet3 Terms and definitionsThere are no terms or definitions to be defined in this document.4 Symbols and abbreviationsThe 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) NAS. Non-asbestos fiber (Non-asbestos) ...... |
