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GB/T 4622.2-2022 English PDF

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GB/T 4622.2-2022: Spiral wound gaskets for pipe flanges - Part 2: Class designated
Status: Valid

GB/T 4622.2: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 4622.2-2022English409 Add to Cart 4 days [Need to translate] Spiral wound gaskets for pipe flanges - Part 2: Class designated Valid GB/T 4622.2-2022
GB/T 4622.2-2008English519 Add to Cart 3 days [Need to translate] Dimensions for spiral wound gaskets for pipe flanges Obsolete GB/T 4622.2-2008
GB/T 4622.2-2003English439 Add to Cart 4 days [Need to translate] The size of the spiral wound gasket pipe flange gaskets Obsolete GB/T 4622.2-2003
GB/T 4622.2-1993English319 Add to Cart 3 days [Need to translate] Spiral wound gaskets for steel pipe flanges--Dimensions Obsolete GB/T 4622.2-1993

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Basic data

Standard ID GB/T 4622.2-2022 (GB/T4622.2-2022)
Description (Translated English) Spiral wound 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 22,238
Date of Issue 2022-10-14
Date of Implementation 2022-10-12
Older Standard (superseded by this standard) GB/T 4622.1-2009, GB/T 4622.2-2008, GB/T 4622.3-2007, GB/T 4622.1-2009, GB/T 4622.2-2008, GB/T 4622.3-2007
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 4622.2-2022: Spiral wound 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.
Spiral wound gaskets for pipe flanges -- Part 2.Class designated ICS 23.040.60 CCSJ15 National Standards of People's Republic of China Partially replace GB/T 4622.1-2009, GB/T 4622.2-2008, GB/T 4622.3-2007 Spiral wound gasket for pipe flange Part 2.Class Series Published on 2022-10-12 2022-10-12 Implementation State Administration for Market Regulation Released by the National Standardization Administration directory Preface I Introduction II 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Type and code 1 4.1 Type 1 4.2 Code 4 5 size 6 5.1 Basic spiral wound gasket for tongue and groove flange size 6 5.2 Size 7 of spiral wound gasket with inner ring for concave and convex flange 5.3 Spiral wound gasket with retaining ring for flat and raised face flanges dimension 7 5.4 Spiral wound gaskets with inner and retaining rings for flat and raised face flanges size 8 6 Technical requirements 10 6.1 Materials 10 6.2 Process requirements 10 6.3 Dimensional deviation 11 6.4 Appearance quality 11 6.5 Performance requirements 11 7 Inspection methods 12 7.1 Appearance quality 12 7.2 Dimensional measurement 12 7.3 Performance test 12 8 Inspection rules 13 8.1 Inspection classification 13 8.2 Factory inspection 13 8.3 Type inspection 13 9 Marking, marking, ordering information, packaging and storage 13 9.1 Mark 13 9.2 Flags 14 9.3 Ordering Information 15 9.4 Packaging 15 9.5 Storage 16 Appendix A (Informative) User Ordering Information 17 Reference 18

foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" drafted. This document is part 2 of GB/T 4622 "Wound Gaskets for Pipe Flanges". GB/T 4622 has published the following parts. --- Part 1.PN series; --- Part 2.Class series. This document partially replaces GB/T 4622.1-2009 "Classification of Wound Gaskets" and GB/T 4622.2-2008 "Wound Gaskets" Gasket Dimensions for Pipe Flanges" and GB/T 4622.3-2007 "Technical Conditions for Wound Gaskets", compared with the original document, the main technical changes as follows. a) Carry out the content of the Class series in GB/T 4622.1-2009, GB/T 4622.2-2008 and GB/T 4622.3-2007 Integrate and rearrange; b) Added positioning ring, metal belt, inner ring material and filling belt (see Table 2 and Table 3); c) Changed the schematic diagram and typical structure of the gasket (see Figure 1 to Figure 5, Figure 1 to Figure 5 of GB/T 4622.1-2009, Figure 1 to Figure 4 of GB/T 4622.2-2008, Figure 1 of GB/T 4622.3-2007); d) Changed the gasket dimensions of Type A and Type B (see Table 4 and Table 5, Table 5 and Table 6 of GB/T 4622.2-2008); e) The dimensions above the nominal pressure Class 600 of the C-type gasket have been deleted, and the limit range of gasket use has been increased (see Table 6, Table 7 of GB/T 4622.2-2008); f) Added the dimensions of C-type and D-type gaskets DN550, changed the D4 dimension of DN20Class150, and changed some parts The D1 dimension of Class300~Class1500 has changed the D2 dimension of some Class900 (see Table 6 and Table 7, Table 7 and Table 8 of GB/T 4622.2-2008); g) Changed gasket process requirements (see 6.2, 3.2 of GB/T 4622.3-2007); h) Changed the dimensional deviation requirements of gaskets T and T1 (see Table 9, Table 4 of GB/T 4622.3-2007); i) Changed the gasket appearance quality requirements (see 6.4, 3.4 of GB/T 4622.3-2007); j) Changed gasket performance requirements (see 6.5, 3.5 of GB/T 4622.3-2007); k) Changed the gasket inspection method (see Chapter 7, Chapter 4 of GB/T 4622.3-2007). Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed by the Machinery Industry Federation. This document is under the jurisdiction of the National Standardization Technical Committee of Pipeline Accessories (SAC/TC237). This document is drafted by. Zhejiang Guotai Xiaoxing Sealing Material Co., Ltd., China Machinery Productivity Promotion Center, Ningbo Tiansheng Sealing Co., Ltd. Co., Ltd., Cixi Hengli Sealing Materials Co., Ltd., Ningbo Xinyuan Industrial Group Co., Ltd., Wuxi Xixi Chemical Machinery Parts Co., Ltd., Guangzhou Dongshan Nanfang Seal Co., Ltd., East China University of Science and Technology, Jiangsu Special Equipment Safety Supervision and Inspection Institute. The main drafters of this document. Wu Yimin, Qiu Kuanheng, Feng Feng, Xu Shaohuan, Zhang Jiahong, Lin Jianhong, Wu Kaijun, Hui Fuming, Zhang Lanzhu, Li Ke. The previous versions of this document and its superseded documents are as follows. ---First published in 1984 as GB 4622-1984; ---The first revision in.1993 was divided into parts and published, namely GB/T 4622.1-1993, GB/T 4622.2-1993, GB/T 4622.3-1993; the second revision in.2003; the third revision in.2008; ---This is the fourth revision.

Introduction

Spiral wound gasket is a kind of sealing gasket commonly used in flange joints. Related GB/T 4622.1-2009 "Wound Gasket Classification", GB/T 4622.2-2008 "Wound Gasket Pipe Flange Gasket Dimensions", GB/T 4622.3-2007 "Wound Gasket Technology" The three standards of "Conditions for Operation" have been published for a long time. In the meantime, with the introduction of new materials for gaskets, some process quality requirements of gaskets have become impossible. To meet market demand, and the applicable pipe flange standards GB/T 9124.1 and GB/T 9124.2 have been revised twice, so the above three standard is necessary. In order to be compatible with the pipe flange standards GB/T 9124.1 and GB/T 9124.2, which are written in PN and Class series respectively, also To avoid the length of the document being too large, the standards for spiral wound gaskets are correspondingly written into two series, PN and Class. GB/T 4622 aims to establish the necessary requirements for the design, manufacture, performance and selection of spiral wound gaskets for pipe flanges. It is planned to be divided into two parts. composition. --- Part 1.PN series. Establish the classification, size and technical requirements of spiral wound gaskets for PN series pipe flanges. --- Part 2.Class series. Establish the classification, size and technical requirements of spiral wound gaskets for Class series pipe flanges. Spiral wound gasket for pipe flange Part 2.Class Series

1 Scope

This document specifies the type, code, size and technical requirements of spiral wound gaskets for pipe flanges marked by Class (hereinafter referred to as "gaskets"). requirements, inspection methods, inspection rules, markings, signs, ordering information, packaging and storage. This document applies to GB/T 9124.2 with nominal pressure of Class150~Class1500 and nominal size of DN15~ Spiral wound gaskets for pipe flanges of DN600 (NPS⅟?~NPS24).

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document. GB/T 2054 Nickel and Nickel Alloy Plate GB/T 3003 Refractory Fibers and Products GB/T 3274 Carbon Structural Steel and Low Alloy Structural Steel Hot Rolled Sheet and Strip GB/T 3280 Stainless Steel Cold Rolled Steel Plate and Strip GB/T 5019.4 Mica-based insulating materials-Part 4.Mica paper GB/T 12385-2008 Test method for sealing performance of gaskets for pipe flanges GB/T 12622-2008 Test method for compression rate and rebound rate of gaskets for pipe flanges GB/T 27793 Asbestos-free fiber gasket material by copying method JB/T 6618 Technical requirements for PTFE tapes for metal wound gaskets JB/T 7758.2 Technical conditions of flexible graphite sheet

3 Terms and Definitions

There are no terms and definitions that need to be defined in this document.

4 Type and code

4.1 Type 4.1.1 See Figure 1 to Figure 4 for the type of wound gasket.

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