GB/T 2550-2025Gas welding equipment - Rubber hoses for welding, cutting and allied processes (English PDF)
气体焊接设备 焊接、切割和类似作业用橡胶软管
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Issued by
State Administration for Market Regulation; Standardization Administration of China
Level / Type
National · Recommended
Issue date
August 29, 2025
Implementation date
March 1, 2026
Scope
GB/T 2550-2025 is the English-translated version of 气体焊接设备 焊接、切割和类似作业用橡胶软管.
GB/T 2550-2025 is the Chinese national standard on gas welding equipment - rubber hoses for welding, cutting and allied processes, in the field of manufacturing engineering.
The /T suffix marks it as a recommended standard: it is not compulsory by itself, but it becomes binding as soon as a contract, a tender or a customer specification calls it up — which in practice is how most foreign buyers meet it.
It was issued on 29 August 2025 by the State Administration for Market Regulation; Standardization Administration of China, and has been in force since 1 March 2026.
Classification: ICS 25.160.30, CCS G 42. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there.
The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.
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Document preview — GB/T 2550-2025
National Standard of the People's Republic of China
- ICS
- 25.160.30
- Classification
- G 42
Issued by: State Administration for Market Regulation; Standardization Administration of China
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Abbreviations
- 5 Application
- 6 Design of the hose
- 7 Materials
- 8 Dimensions and tolerances
- 9 Requirements and type inspection
- 10 Colour and marking of the hose
3 Terms and definitions
4 Abbreviations
5 Application
6 Design of the hose
7 Materials
8 Dimensions and tolerances
9 Requirements and type inspection
10 Colour and marking of the hose
Foreword
This document was issued on 29 August 2025 by the State Administration for Market Regulation and the Standardization Administration of the People's Republic of China, and has been in force since 1 March 2026.
It replaces GB/T 2550-2016.
Classification: ICS 25.160.30, CCS G 42.
About this edition
GB/T 2550-2025 is the current edition. It was issued on 29 August 2025 and has been in force since 1 March 2026, replacing GB/T 2550-2016.
GB/T 2550-2016 has been superseded: a specification that still cites it is citing a withdrawn edition.
The interval between issue and effect is the transition period. It exists so that producers, laboratories and buyers can requalify products, revise procedures and use up documentation before the new text becomes the one that applies. The date on this page is the official one from the record of the Standardization Administration.
Classification and status
GB/T 2550-2025 is classified under ICS 25.160.30, in the field of manufacturing engineering. ICS is the International Classification for Standards, the same scheme used by ISO and by the national bodies of most countries, which is what allows a Chinese standard to be placed beside its foreign counterparts on subject rather than on number.
Its Chinese Standard Classification code is CCS G 42. CCS is the domestic scheme, a letter for the sector and two digits for the subject within it, and it is the code by which the standard is filed and searched in China.
The GB/T prefix marks a recommended national standard. It is not, in itself, law: it becomes binding when a contract names it, when a regulation or a mandatory standard refers to it, or when a producer declares conformity with it. In practice that covers most of the cases in which it will be read — a purchase specification, an inspection agreement or a certification scheme.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 17 pages — is available in the English PDF.
Referenced standards
Cited by
- GB 9448-2025Safety in welding and cutting
- GB/T 41861-2022Gas welding equipment - Hose assemblies for equipment for welding, cutting and allied processes
- JB/T 7436-2017Thermal cutting equipment - Carriage-type cutting machines
- NB/T 25042-2014The specification of welding safety management for conventional island of nuclear power plants
- JB/T 10248-2013Oxygen-gasoline welding and cutting equipment
Similar standards
Editions of GB/T 2550
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 2550-2025 | Gas welding equipment - Rubber hoses for welding, cutting and allied processes | current edition | Current |
| GB/T 2550-2016 | Gas welding equipment-Rubber hoses for welding,cuttingand allied processes | previous edition | Superseded |
This page sells the current edition, GB/T 2550-2025. Earlier editions are listed for reference only.
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