GB/T 19675.1-2023 English PDF

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GB/T 19675.1-2023: Reinforced flexible graphite gaskets for pipe flanges - Part 1: PN designated
Status: Valid

GB/T 19675.1: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 19675.1-2023	349	Add to Cart	4 days	Reinforced flexible graphite gaskets for pipe flanges - Part 1: PN designated	Valid
GB/T 19675.1-2005	319	Add to Cart	3 days	Dimensions of flexible graphite gaskets reinforced with tanged metal sheet for pipe flanges	Obsolete

Similar standards

GB/T 19326   GB/T 13401   GB/T 17185   GB/T 45182   GB/T 12385   GB/T 19675.2   

Basic data

Standard ID: GB/T 19675.1-2023 (GB/T19675.1-2023)
Description (Translated English): Reinforced flexible graphite 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: 18,110
Date of Issue: 2023-09-07
Date of Implementation: 2024-04-01
Older Standard (superseded by this standard): GB/T 19675.1-2005,GB/T 19675.2-2005; ���ִ��棺GB/T 19675.1-2005; GB/T 19675.2-2005
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 19675.1-2023: Reinforced flexible graphite 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 19675.1-2005, GB/T 19675.2-2005 Flexible graphite composite reinforced gasket for pipe flange 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

Preface III Introduction IV 1 Scope 1 2 Normative reference documents 1 3 Terms and Definitions 1 4 Type and code 1 5 Materials and workmanship 3 6 Requirements 4 7 Inspection methods 11 8 Inspection Rules 11 9 Marking, marking, packaging, transportation and storage12 Figure 1 Composite enhanced type 1 Figure 2 Gasket with bolt hole structure type 2 Figure 3 Flat ring gasket structure type 2 Figure 4 Basic type 2 Figure 5 Inner hemming type 2 Figure 6 Inner and outer edge type 3 Table 1 Reinforced gasket types and codes 3 Table 2 Common metal plate materials for reinforced gaskets 3 Table 3 Dimensions of reinforced gaskets with bolt holes for flat flanges 5 Table 4 Dimensions of flat ring reinforced gaskets for raised face flanges 7 Table 5 Dimensions of flat ring reinforced gaskets for concave and convex flanges 8 Table 6 Dimensions of flat ring reinforced gaskets for tongue and groove flanges 9 Table 7 Dimensional limit deviation of reinforced gaskets for flat and raised face flanges10 Table 8 Dimensional limit deviation of reinforced gaskets for concave-convex and tongue-and-groove flanges 10 Table 9 Reinforced gasket compression rate and rebound rate10 Table 10 Enhanced gasket sealing performance10

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 19675 "Flexible graphite composite reinforced gaskets for pipe flanges". GB/T 19675 has been released The following parts. ---Part 1.PN series; ---Part 2.Class Series. This document partially replaces GB/T 19675.1-2005 "Dimensions of metal punched tooth plates and flexible graphite composite gaskets for pipe flanges" and GB/T 19675.2-2005 "Technical Conditions for Metal Punch Tooth Plate Flexible Graphite Composite Gaskets for Pipe Flanges". With GB/T 19675.1- Compared with.2005 and GB/T 19675.1-2005, in addition to structural adjustments and editorial changes, the main technical changes are as follows. a) Changed the scope of application (see Chapter 1, Chapter 1 of GB/T 19675.1-2005); b) Added gasket types and requirements (see Chapter 4); c) Added process requirements for gasket production (see 5.2); d) Added dimensions for reinforced gaskets with bolt holes for flat flanges (see Table 3); e) Added the dimensions of flat ring reinforced gaskets for DN10~DN400 and PN63 raised face flanges (see Table 4); f) Added DN700~DN2000, PN10; DN700~DN2000, PN16; DN700~DN1000, PN25 and Dimensions of flat ring reinforced gaskets for DN10~DN400, PN63 concave and convex flanges and tongue and groove flanges (see Table 5 and Table 6); g) Changed the dimensional limit deviation of gaskets (see Table 7 and Table 8, Table 1 and Table 2 of GB/T 19675.2-2005); h) Changed the performance requirements of gaskets (see 6.4, 3.4 of GB/T 19675.2-2005); i) The marking method of gaskets has been changed (see 9.1, Chapter 5 of GB/T 19675.1-2005); j) Added storage period and related regulations (see 9.4.3). 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., Zhejiang Cathay Xiaoxing Sealing Materials Co., Ltd., Ningbo Tiansheng Seals Co., Ltd., Cixi Hengli Sealing Materials Co., Ltd., Jiangsu Special Equipment Safety Supervision and Inspection Institute, East China University of Science and Technology. The main drafters of this document. Zhang Jiahong, Wu Yimin, Feng Feng, Qiu Kuanheng, Zhang Lanzhu, He Hua, Xu Shaohuan, Lou Wenchao, and Li Xiaoqin. The previous versions of this document and the documents it replaces are as follows. ---First released in.2005 as GB/T 19675.1-2005, GB/T 19675.2-2005; ---This is the first revision.

Introduction

Flexible graphite composite reinforced gasket is a commonly used sealing gasket in industrial fluid equipment and pipeline flange connections. GB/T 19675.1- 2005 "Dimensions of flexible graphite composite gaskets for metal punched tooth plates for pipe flanges" and GB/T 19675.2-2005 "Flexible metal punched tooth plates for pipe flanges" It has been more than ten years since the release and implementation of the "Technical Conditions for Flexible Graphite Composite Gaskets". During this period, with the update and improvement of gasket production technology, the operating conditions and environment The diversified development, and the pipe flange standard adapted to it has been revised twice. Therefore, in order to comply with the current pipe flange standard PN and The two series of Class are compatible, and the standards of flexible graphite composite reinforced gaskets are also divided into PN series and Class series accordingly. GB/T 19675 aims to establish the necessary requirements for the design, manufacturing, performance and selection of flexible graphite composite reinforced gaskets. It is planned to be composed of two parts composition. ---Part 1.PN series. The purpose is to establish the specifications, dimensions and technical requirements of PN series flexible graphite composite reinforced gaskets. ---Part 2.Class Series. The purpose is to establish the specifications, dimensions and technology of Class series flexible graphite composite reinforced gaskets Require. Flexible graphite composite reinforced gasket for pipe flange Part 1.PN Series

1 Scope

This document specifies the types and codes, materials and processes, requirements, and inspections of flexible graphite composite reinforced gaskets for PN-marked pipe flanges. Methods, inspection rules, marking, marking, packaging, transportation and storage. This document is applicable to flexible graphite composite pipe flanges with nominal pressures PN2.5~PN63 and nominal sizes DN10~DN2000. Reinforced gasket.

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 2520 Cold-rolled electro-tin-plated steel plates and steel strips GB/T 3280 Stainless steel cold-rolled steel plates and strips GB/T 12385-2008 Gasket sealing performance test method for pipe flanges GB/T 12622-2008 Test method for compression rate and rebound rate of gaskets for pipe flanges JB/T 6628 Flexible graphite composite reinforced (plate) pad

3 Terms and definitions

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

4 Type and code

4.1 Type 4.1.1 Flexible graphite composite reinforced gaskets (hereinafter referred to as "reinforced gaskets") are divided into metal tooth plate composite and metal flat gaskets according to the type of composite reinforcement. Plate composite, as shown in Figure 1. a) Metal tooth plate composite b) Metal flat plate composite Indexing serial number description. 1---Flexible graphite; 2---metal plate. Figure 1 Composite enhanced type ......

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