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GB/T 41861-2022Gas welding equipment - Hose assemblies for equipment for welding, cutting and allied processes (English PDF)

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 12, 2022

Implementation date

October 12, 2022

Scope

GB/T 41861-2022 (Gas welding equipment - Hose assemblies for equipment for welding, cutting and allied processes) is available as an English-translated PDF.

GB/T 41861-2022 — This document specifies performance and test requirements for hose assemblies for equipment for welding, cutting and allied processes. This document applies to rubber hose assemblies used in gas circuit assemblies for equipment for welding, cutting and allied processes. It does not apply to hose assemblies in the gas pipeline upstream of pressure reducer.

Document preview — GB/T 41861-2022

National Standard of the People's Republic of China

Issued by: SAMR; SAC

Contents

  • Foreword...3
  • 1 Scope...4
  • 2 Normative references...4
  • 3 Terms and definitions...4
  • 4 Technical requirements...5
  • 4.1 Materials...5
  • 4.2 Finishing material...6
  • 4.3 Hose connection...6
  • 5 Operating guidelines...6
  • 6 Performance requirements and test methods...6
  • 6.1 General requirements...6
  • 6.2 Gas tightness test...6
  • 6.3 Separation test under pressure conditions...7
  • 6.4 Separation test under axial load...7

Foreword

This document is drafted in accordance with GB/T 1.1-2020 "Directives for

standardization - Part 1: Rules for the structure and drafting of standardizing

documents".

This document modifies and adopts ISO 8207:1996 "Gas welding equipment -

Specification for hose assemblies for equipment for welding, cutting and allied

processes".

Compared with ISO 8207:1996, this document has more adjustments in structure. See

Appendix A for the comparison list of structure number changes between the two

documents.

Compared with ISO 8207:1996, this document has many technical differences. The

outer margins of the clauses involved are marked with a vertical single line (丨). See

Appendix B for a list of these technical differences and their reasons.

The following editorial change has been made to this document:

- Add an introduction of Appendix C in the main text (see 4.3).

Attention is drawn to the possibility that some of the elements of this document may be

the subject of patent rights. The issuing authority of this document shall not be held

responsible for identifying any or all such patent rights.

This document was proposed by and shall be under the jurisdiction of National

Technical Committee 55 on Welding of Standardization Administration of China

(SAC/TC 55).

Drafting organizations of this document: Ningbo Longxing Gas Cutting Tools Co., Ltd.;

Harbin Welding Institute Limited Company; Anhui Fuhuang Steel Structure Co., Ltd.;

Machinery Industry Flame Cutting Machinery Product Quality Supervision and

Inspection Center; Fujian Industrial Equipment Installation Co., Ltd.; Northeast

Petroleum University; Central Research Institute of Building and Construction Co., Ltd.

MCC Group; Beijing Jingye Technology Co., Ltd.; Guangdong Taigewei Robot

Technology Co., Ltd.; Guangdong Hengda Plastic Pipe Products Corporation;

Guangdong ForeWeld Co., Ltd.; State Grid Jiangsu Electric Power Co., Ltd. Zhenjiang

Power Supply Company; Chongqing Wokesen Machinery Manufacturing Co., Ltd.

Main drafters of this document: Zhao Songbai, Fan Zhizhong, Chen Yi, Wang Zhixin,

Shen Wanyu, Yu Haonan, Su Jinhua, Nie Zhenhua, Wei Shaopeng, Gao Zhijie, Lu

Xinjian, Wen Yueqiang, Liu Zhizhong, Zhou Peng, Tian Meng, Xiang Qian.

Gas welding equipment - Hose assemblies for equipment for

welding, cutting and allied processes

1 Scope

This document specifies performance and test requirements for hose assemblies for

equipment for welding, cutting and allied processes.

This document applies to rubber hose assemblies used in gas circuit assemblies for

equipment for welding, cutting and allied processes. It does not apply to hose

assemblies in the gas pipeline upstream of pressure reducer.

2 Normative references

The contents of the following documents, through normative references in this text,

constitute indispensable provisions of this document. Among them, for dated references,

only the edition corresponding to that date applies to this document. For undated

references, the latest edition (including all amendments) applies to this document.

GB/T 2550 Gas welding equipment - Rubber hoses for welding, cutting and allied

processes (ISO 3821:2008, IDT)

GB/T 3375 Welding terminology

GB/T 5107 Gas welding equipment - Hose connections for equipment for welding,

cutting and allied processes

GB/T 40371 Gas welding equipment - Materials for equipment used in gas welding,

cutting and allied processes (ISO 9539:2010, MOD)

GB/T 40337 Gas tightness of equipment for gas welding and allied processes (ISO

9090:2019, MOD)

3 Terms and definitions

The terms and definitions defined in GB/T 3375 and the following ones apply to this

document.

3.1

Hose assembly

treatment.

4.2 Finishing material

Paint applied on the outside of the equipment shall be prevented from entering its gas

piping.

When making hose assembly connections, it shall not use viscous lubricants or filler

pastes, etc. to lubricate the hose tail or the hose.

4.3 Hose connection

The hose tail shall match the hose and be fastened by the hose clamp. See Appendix C

for recommended hose tail sizes.

When assembling and tightening the various parts of hose assembly, it shall properly

adjust the mutual position of the hose clamp and the hose tail, to prevent damage to the

hose lining.

When making connections, the outside of the hose shall be free from cuts, abrasions or

any other damage. The inside of the hose shall be free of dirt, talcum powder, rubber

chips, or other debris and impurities that may interfere with proper airflow and safe

operation of the equipment.

Hose clamps shall not be protruding or sharp, to prevent operator injury.

5 Operating guidelines

The physical strength and comprehensive safety performance of hose assemblies shall

meet the requirements of Clause 6.

6 Performance requirements and test methods

6.1 General requirements

The tests specified in this clause shall only be applicable to type tests.

Note: The tests specified in this clause are only applicable to type tests. The tests specified in this

clause are suitable for quality control checks; are not a production test procedure for all hose

connections and hose assemblies.

6.2 Gas tightness test

6.2.1 General requirements

When tested in accordance with GB/T 40337, the leakage rate of hose assembly shall

......

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

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