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GB/T 24626-2025Explosion resistant equipment (English PDF)

耐爆炸设备

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 31, 2025

Implementation date

May 1, 2026

Scope

GB/T 24626-2025 is the English-translated version of 耐爆炸设备.

GB/T 24626-2025 is the Chinese standard "Explosion resistant equipment". Its scope clause reads: This document specifies the general requirements for explosion-resistant equipment, the requirements for explosion-resistant pressure equipment, the requirements for explosion-resistant pressure impact equipment, and quality control requirements.

Requirements for components and usage information. This document applies to equipment and devices where explosions are considered abnormal load conditions, deflagration may occur, and where explosion resistance is provided by metallic materials. combination.

The atmospheric conditions applicable to this document are. pressure range of 80kPa to 110kPa and temperature range of -20°C to 60°C. Note.

This document may also be helpful for the design, manufacture, testing, and marking of equipment used in environments outside the scope of the above-mentioned scope, provided that such equipment does not pose a risk to...

The corresponding standard requirements. This document does not apply to equipment and equipment combinations that may detonate, equipment designed with explosion-proof enclosures, or offshore facilities. Its clauses include terms and definitions.

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Document preview — GB/T 24626-2025

National Standard of the People's Republic of China

ICS: 29.260.20
Classification: K 35
Replacing: GB/T 24626-2009

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

Preface
Introduction
1.Scope
2 Normative References
3.Terms and Definitions
4.General Requirements for Explosion-Resistant Equipment
4.1 General Rules
4.2 Design Pressure
4.3 Design Temperature
4.4 Additional Load
4.5 Wall thickness tolerance
5.Explosion-resistant pressure equipment 3.
6.Explosion-resistant pressure shock equipment
6.1 General Rules
6.2 Design Procedure
6.3 Materials designed to withstand explosive pressure shock
6.4 Explosion-resistant pressure shock design
6.5 Design Quality Test Procedure for Resistance to Explosive Pressure Shock
6.6 Design and test documents for explosion-resistant pressure shock equipment
7.Quality documents for explosion-proof equipment 9.
7.1 Pressure Vessels
7.2 Dimensions
7.3 Materials
7.4 Welding
7.5 Report
8.Information on usage
8.1 Mark
8.2 Random File
Appendix A (Informative) Calculation of Design Pressure for a Single Vessel
Appendix B (Informative) Explosions in Pipelines and Interchange Containers
Appendix C (Informative) Design of Explosion-Resistant Pressure Shock Equipment Using Finite Element Analysis (FEA)
Appendix D (Informative) Example 15 of Constraining Stress Concentration

1 Scope

This document specifies the general requirements for explosion-resistant equipment, the requirements for explosion-resistant pressure equipment, the requirements for explosion-resistant pressure impact equipment, and quality control requirements.

Requirements for components and usage information.

This document applies to equipment and devices where explosions are considered abnormal load conditions, deflagration may occur, and where explosion resistance is provided by metallic materials.

combination.

The atmospheric conditions applicable to this document are. pressure range of 80kPa to 110kPa and temperature range of -20°C to 60°C.

Note. This document may also be helpful for the design, manufacture, testing, and marking of equipment used in environments outside the scope of the above-mentioned scope, provided that such equipment does not pose a risk to...

The corresponding standard requirements.

This document does not apply to equipment and equipment combinations that may detonate, equipment designed with explosion-proof enclosures, or offshore facilities.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

GB/T 228.1 Metallic materials - Tensile testing - Part 1.Test method at room temperature

GB/T 2900.35 Electrical Engineering Terminology. Explosive Atmospheres

GB/T 9445 Qualification and Certification of Nondestructive Testing Personnel

GB/T 18253-2018 Types of Inspection Documents for Steel and Steel Products

3 Terms and Definitions

The terms and definitions defined in GB/T 2900.35 and the following terms and definitions apply to this document.

3.1 Explosion

Violent oxidation or decomposition reactions that lead to increased temperature and/or pressure.

Note. The "explosion" here mainly refers to a "chemical explosion".

3.2 deflagration

An explosion that propagates at subsonic speeds.

3.3 Detonation

An explosion that propagates at supersonic speeds and has shock wave characteristics.

3.4 Explosion resistant

Containers and equipment are designed to withstand explosive pressure or explosive pressure shocks.

Note. Explosion-resistant equipment has this characteristic.

GB/T 25285.1 | GB/T 20936.4 | GB/T 29304 | GB/T 19518.2 | GB/T 46692.1 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 21 pages — is available in the English PDF.

Referenced standards

Normative references

Cited by

Editions of GB/T 24626

Edition	Title	Revision	Status
GB/T 24626-2025	Explosion resistant equipment	current edition	Current
GB/T 24626-2009	Explosion resistant equipment	previous edition	Superseded

This page sells the current edition, GB/T 24626-2025. Earlier editions are listed for reference only.

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