GB/T 39245.2-2020Grooved metal gaskets with covering layers for pipe flanges—Part 2: Class designated (English PDF)
管法兰用金属齿形组合垫片 第2部分：Class 系列
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
November 19, 2020
Implementation date
June 1, 2021
Scope
GB/T 39245.2-2020 is the English-translated version of 管法兰用金属齿形组合垫片 第2部分：Class 系列.
GB/T 39245.2-2020 is the Chinese standard "Grooved metal gaskets with covering layers for pipe flanges—Part 2: Class designated".
Its scope clause reads: This part of GB/T 39245 specifies the metal toothed composite gasket with a covering layer for steel pipe flanges marked by Class (hereinafter referred to as gold The type and code, size, requirements, inspection, marking and marking, packaging, storage and transportation of tooth-shaped combined gaskets.
This section applies to metal tooth-shaped composite gaskets with a nominal pressure not greater than Class2500 and a nominal size not greater than DN1500 (NPS60). Its clauses include type and code.
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Document preview — GB/T 39245.2-2020
National Standard of the People's Republic of China
- ICS
- 23.040.60
- Classification
- J 15
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Type and code
- 3.1 Type
1 Scope
This part of GB/T 39245 specifies the metal toothed composite gasket with a covering layer for steel pipe flanges marked by Class (hereinafter referred to as gold
The type and code, size, requirements, inspection, marking and marking, packaging, storage and transportation of tooth-shaped combined gaskets.
This section applies to metal tooth-shaped composite gaskets with a nominal pressure not greater than Class2500 and a nominal size not greater than DN1500 (NPS60).
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document.
For undated references, the latest version (including all amendments) applies to this document.
GB/T 2054 Nickel and nickel alloy plate
GB/T 3280 Cold rolled stainless steel plate and strip
GB/T 12385-2008 Gasket sealing performance test method for pipe flange
JB/T 7758.2 Technical conditions of flexible graphite board
JB/T 10688 Teflon gasket
3 Type and code
3.1 Type
3.1.1
The metal tooth-shaped composite gasket is divided into three types. basic type, type with integral positioning ring, and type with movable positioning ring. Three metal tooth profile group
The structure of the gasket is shown in Figure 1~Figure 3.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
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GB/T 39245.1-2020 — Grooved metal gaskets with covering layers for pipe flanges—Part 1: PN designated
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