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GB/T 41861-2022 English PDF (GBT41861-2022)

GB/T 41861-2022 English PDF (GBT41861-2022)

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GB/T 41861-2022: Gas welding equipment - Hose assemblies for equipment for welding, cutting and allied processes

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.
GB/T 41861-2022
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 25.160.30
CCS J 64
Gas welding equipment - Hose assemblies for equipment for
welding, cutting and allied processes
(ISO 8207:1996, Gas welding equipment - Specification for hose assemblies for equipment for welding, cutting and allied processes, MOD)
ISSUED ON: OCTOBER 12, 2022
IMPLEMENTED ON: OCTOBER 12, 2022
Issued by: State Administration for Market Regulation;
Standardization Administration of the PRC.
Table of 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
Appendix A (Informative) Structural changes of this document compared with ISO 8207:1996 ... 9
Appendix B (Informative) Technical differences between this document and ISO 8207:1996 and their reasons ... 10
Appendix C (Informative) Recommended hose tail sizes ... 11
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 (???). 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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