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GB/T 25198-2023Heads for pressure vessels (English PDF)

压力容器封头

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

August 6, 2023

Implementation date

March 1, 2024

Scope

GB/T 25198-2023 is the English-translated version of 压力容器封头.

GB/T 25198-2023 is the Chinese standard "Heads for pressure vessels".

Its scope clause reads: This document specifies steel, non-ferrous metals (aluminum and aluminum alloys, copper and copper alloys, titanium and titanium alloys, nickel and nickel alloys, zirconium and zirconium alloys) and Types, type parameters and manufacturing, inspection and acceptance requirements of heads for composite plate pressure vessels.

This document is applicable to hemispherical and elliptical pressure vessels whose blanks are whole plates or assembled plates and are formed by stamping, spinning, rolling or splitting.

Shaped, dish-shaped, spherical crown, flat-bottomed and conical heads. The manufacturing, inspection and acceptance requirements for heads for atmospheric pressure vessels and other pressure-bearing equipment may also be implemented with reference to this document. Its clauses include normative reference documents; terms and definitions.

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Document preview — GB/T 25198-2023

National Standard of the People's Republic of China

ICS: 23.020.30
Classification: J 74
Replacing: GB/T 25198-2010

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface
1 Scope
2 Normative reference documents
3 Terms and Definitions
4 symbol
5 Type parameters and markings
6 Manufacturing, inspection and acceptance
7 Factory information
8 product logo
9 Coating and transportation packaging
Appendix B (informative) HHA hemispherical head type parameters
Appendix C (informative) EHA elliptical head type parameters
Appendix D (informative) EHB elliptical head type parameters
Appendix E (Informative) THA Disc Head Type Parameters
Appendix F (Informative) THB Disc Head Type Parameters
Appendix G (informative) SDH spherical head type parameters
Appendix H (informative) Head ordering technical conditions
Appendix I (informative) Head forming thickness reduction rate
Appendix J (informative) Head groove type and code
Appendix K (informative) Head product certificate and data report
Appendix L (informative) Density of common materials

1 Scope

This document specifies steel, non-ferrous metals (aluminum and aluminum alloys, copper and copper alloys, titanium and titanium alloys, nickel and nickel alloys, zirconium and zirconium alloys) and

Types, type parameters and manufacturing, inspection and acceptance requirements of heads for composite plate pressure vessels.

This document is applicable to hemispherical and elliptical pressure vessels whose blanks are whole plates or assembled plates and are formed by stamping, spinning, rolling or splitting.

Shaped, dish-shaped, spherical crown, flat-bottomed and conical heads.

The manufacturing, inspection and acceptance requirements for heads for atmospheric pressure vessels and other pressure-bearing equipment may also be implemented with reference to this document.

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 150 (all parts) Pressure vessels

GB/T 9452 Method for determination of effective heating zone of heat treatment furnace

GB/T 12337 Steel spherical storage tank

GB/T 26929 Pressure vessel terminology

JB4732 Steel Pressure Vessels---Analysis and Design Standards

JB/T 4734 Aluminum welding container

JB/T 4745 titanium welded container

JB/T 4755 Copper pressure vessels

JB/T 4756 Nickel and nickel alloy pressure vessels

NB/T 10558 Pressure vessel coating and transportation packaging

NB/T 47002 (all parts) Composite plates for pressure vessels

NB/T 47011 Zirconium pressure vessels

NB/T 47013.2 Non-destructive testing of pressure equipment Part 2.Radiographic testing

NB/T 47013.3 Non-destructive testing of pressure equipment Part 3.Ultrasonic testing

NB/T 47013.4 Non-destructive testing of pressure equipment Part 4.Magnetic particle testing

NB/T 47013.5 Non-destructive testing of pressure equipment Part 5.Penetration testing

NB/T 47013.7 Non-destructive testing of pressure equipment Part 7.Visual inspection

NB/T 47013.10 Non-destructive testing of pressure equipment Part 10.Ultrasonic testing using diffraction time difference method

NB/T 47013.11 Non-destructive testing of pressure equipment Part 11.X-ray digital imaging testing

TSGZ6002 Special Equipment Welding Operator Assessment Rules

TSGZ8001 Assessment rules for non-destructive testing personnel of special equipment

3 Terms and definitions

GB/T 150 (all parts), GB/T 26929, JB4732, JB/T 4734, JB/T 4745, JB/T 4755, JB/T 4756 and […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 78 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 150 · JB 4732 · TSG Z6002 · TSG Z8001

Cited by

Similar standards

GB/T 17878-2026|GB/T 33578.3-2026|GB/T 33578.4-2026|GB/T 34527-2026|GB/T 47120-2026|GB/T 47578-2026

Editions of GB/T 25198

Edition	Title	Revision	Status
GB/T 25198-2023	Heads for pressure vessels	current edition	Current
GB/T 25198-2010	Heads for pressure vessels	previous edition	Superseded

This page sells the current edition, GB/T 25198-2023. Earlier editions are listed for reference only.

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