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GB/T 26002-2025: Stainless steel pliable corrugated tubing and fittings used in gas piping systems
Status: Valid GB/T 26002: Evolution and historical versions
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Stainless steel pliable corrugated tubing and fittings used in gas piping systems
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GB/T 26002-2025
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| GB/T 26002-2010 | English | 579 |
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Stainless steel pliable corrugated tubing and fittings used in gas piping systems
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GB/T 26002-2010
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Basic data | Standard ID | GB/T 26002-2025 (GB/T26002-2025) | | Description (Translated English) | Stainless steel pliable corrugated tubing and fittings used in gas piping systems | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | P47 | | Classification of International Standard | 91.140 | | Word Count Estimation | 26,252 | | Date of Issue | 2025-03-28 | | Date of Implementation | 10/1/2025 | | Older Standard (superseded by this standard) | GB/T 26002-2010 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 26002-2025: Stainless steel pliable corrugated tubing and fittings used in gas piping systems
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ICS 91.140
CCSP47
National Standard of the People's Republic of China
Replace GB/T 26002-2010
Stainless steel corrugated hose and fittings for gas transportation
Released on 2025-03-28
2025-10-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of contents
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Specifications, classification and model compilation 2
4.1 Specifications 2
4.2 Pipe fittings classification 2
4.3 Model compilation 2
5 Materials, appearance, structure and dimensions 3
5.1 Materials 3
5.2 Appearance 3
5.3 Structure and size 3
6 Performance Requirements 4
6.1 Hose 4
6.2 Pipe fittings 4
7 Test methods 5
7.1 Test conditions 5
7.2 Test equipment 5
7.3 Hose 6
7.4 Pipe fittings 11
8 Inspection rules 15
8.1 Factory Inspection 15
8.2 Type inspection 16
9 Marking and installation instructions 17
9.1 Signs 17
9.2 Installation Instructions 17
10 Packaging, transportation and storage 17
10.1 Packaging 17
10.2 Transportation17
10.3 Storage 17
Appendix A (Normative) Hose dimensions and pipe connection thread specifications 18
References 19
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
This document replaces GB/T 26002-2010 "Stainless steel corrugated hose and fittings for gas transportation" and is consistent with GB/T 26002-2010.
In addition to structural adjustments and editorial changes, the main technical changes are as follows.
a) Changed the scope, the nominal size was changed from maximum DN50 to DN32, and the inapplicable part was added (see Chapter 1,.2010 Edition
Chapter 1);
b) The terms and definitions of “tube blank” and “coated tube” have been deleted (see 3.1 and 3.5 of the.2010 edition);
c) Change the definition of "bellows" to "original pipe" (see 3.3, 3.2 of the.2010 edition);
d) Deleted the nominal pressure classification and corresponding model compilation content of stainless steel corrugated hoses and fittings for transportation (see the.2010 edition
4.1.1, 4.2.2, 4.3.2);
e) Deleted the specifications of DN40 and DN50 (see 4.1.2, Table 4 to Table 9 of the.2010 edition);
f) Deleted the classification of "buried hose" and "non-buried hose", the corresponding model compilation content and the relevant requirements of "buried hose" (see.2010
Version 4.2, 5.1.2.6);
g) Deleted the material grades S32168, S42020, Q235-A, 20 and the minimum wall thickness requirements of the pressure-bearing parts of the corresponding material pipes, and changed
The implementation standards for NBR and PE have deleted the requirements for coatings exposed outdoors [see Table 1, 5.1.2, Table 1,.2010 edition
5.1.1.4, 5.1.2.3a)];
h) Deleted the relevant requirements and test methods for stainless steel corrugated hoses and fittings for nominal pressure PN0.01 (Type II) (see.2010
5.1.2.1, 5.1.2.8, 5.2, Chapter 6 of the.2016 edition);
i) The scratch requirements on the original tube surface and the color identification requirements for the coating layer have been changed (see 5.2.1, 5.2.2, 5.1.3.1, 8.1.1 of the.2010 edition);
j) Added the requirements for the coating layer on the corrugated part of the stainless steel corrugated hose for transportation (see 5.3.5);
k) Change the anti-corrosion requirements for non-buried pipe coatings from grade classification to specified coating thickness range (see 5.3.6,.2010 edition)
5.1.2.5);
l) The length requirement for the stainless steel corrugated hose for transportation has been deleted (see 5.1.2.7 of the.2010 edition);
m) The requirements for its overall dimensions have been changed (see 5.3.6, 5.1.2.8 of the.2010 edition);
n) The processing requirements for stainless steel corrugated hoses and fittings for transportation have been deleted (see 5.1.2.9 of the.2010 edition);
o) Changed the flame retardancy requirements and test methods for the coating of stainless steel corrugated hose for transportation (see Table 2, 7.3.12,.2010 edition)
Table 4);
p) Added the requirements and test methods for the abrasion resistance of the coating marking of the stainless steel corrugated hose for transportation (see Table 2, 7.3.13);
q) The piping torsion requirements and test methods for pipe fittings have been deleted (see Table 5 and 6.2.10 of the.2010 edition);
r) The mass change rate requirements and test methods for gas resistance of seals have been changed (see Table 3, 7.4.10, Table 5 of the.2010 edition);
s) Added test conditions and test equipment requirements (see 7.1, 7.2);
t) Added the requirements for the tensile rate and torsion rate of the tensile test and torsion test (see 7.3.3 and 7.3.8);
u) The impact energy requirements for the impact resistance test of pipe fittings have been changed (see 7.4.4, Table 5 and 6.2.2 of the.2010 edition);
v) Some inspection items and sampling inspection requirements have been changed (see Table 11, 8.1.3, and 7.2.2 of the.2010 edition);
w) Deleted the sample quantity requirements and single piece inspection judgment in type inspection (see 7.3.3 and 7.4 of the.2010 edition);
x) Changed the marking requirements for stainless steel corrugated hoses and fittings for transportation (see 9.1, 8.1.1 of the.2010 edition);
y) Added the requirements for installation instructions (see 9.2).
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document is proposed and coordinated by the Ministry of Housing and Urban-Rural Development of the People's Republic of China.
This document was drafted by. China Municipal Engineering North China Design and Research Institute Co., Ltd., Aerospace Morning Light Co., Ltd. Shanghai Branch,
Hangzhou Wanquan Metal Hose Co., Ltd., Hangzhou Lianfa Pipe Industry Technology Co., Ltd., Zhejiang Xinqi Pipe Industry Co., Ltd., Wuhu Taihe Pipe Industry Co., Ltd.
Co., Ltd., Ningbo Tianxin Metal Hose Co., Ltd., Ningbo Anbang Pipe Industry Co., Ltd., Ningbo Shishan Pipe Industry Co., Ltd., Zhejiang Shengzi
Pipe Industry Co., Ltd., Wenzhou Libo Pipe Industry Co., Ltd., Guizhou Gas Group Co., Ltd., Shenzhen Gas Group Co., Ltd.
Guangzhou Gas Group Co., Ltd., Hangzhou Urban and Rural Construction Design Institute Co., Ltd., Guangdong Foran Technology Co., Ltd., Guangzhou Guangran Design
Co., Ltd., Zhejiang Qiai Pipe Industry Co., Ltd., Ningbo Xinyida Energy Equipment Manufacturing Co., Ltd., Hangzhou Hengtong Metal Hose Co., Ltd.
Nanjing Rouke Aviation Equipment Technology Co., Ltd., Zhejiang Shuaifeng Electric Co., Ltd., Zhejiang Zhenlong Energy Equipment Technology Co., Ltd., Zhejiang
Jiangsu Zeiss Pipe Technology Co., Ltd., Nanjing Zhixing Pipe Industry Co., Ltd., Chengdu Zhongyuan Pipe Industry Co., Ltd., Ningbo Shengjie Pipe Industry Co., Ltd., Zhejiang
Jiang Wanjie Pipe Industry Co., Ltd., Yuhuan Jianglin Plumbing Pipe Industry Co., Ltd., Ningbo Hongwu Pipe Industry Co., Ltd., Ningbo Hangyong Pipe Industry Co., Ltd.
Ningbo Qingtai Machinery Co., Ltd., Chengdu Gongtong Pipe Industry Group Co., Ltd., Ningbo Suoli Pipe Industry Co., Ltd., Taizhou Kangge Gas Technology
Technology Co., Ltd., Made Aivaz (Jinan) Metal Products Co., Ltd., Vigus (Shanghai) Fluid Technology Co., Ltd., Yuhuan Songliao Pipe Industry Co., Ltd.
Co., Ltd., Rifeng Enterprise Group Co., Ltd., and Bomalicheng Metal Materials (Suzhou) Co., Ltd.
The main drafters of this document are. Qu Yanhong, Li Jun, Ye Zhaohui, Wu Wenqing, Fan Siyi, Huang Chenbao, Wang Xianwen, Zhou Suyang, Yu Yuehui, Li Bao,
Zhang Shenzheng, Wang Jingchong, Yang Liang, Li Heshan, Liu Wenyan, Tang Linfeng, Zhang Haisheng, Wu Xinying, Shi Gandang, Ying Xumei, Zhou Qihong, Lin Bo, Shao Yuji,
Gu Longfei, Bei Yesen, Chen Aixiang, Zhang Lidan, Xia Haiyun, Tian Chenfeng, Jiang Changyou, Mao Hongjie, Tao Zhengnian, Wu Jielei, Wang Jing, Xiang Lei, Lin Yangjian,
Ren Yanqing, Gao Shenghua, Wu Weiran, Zhong Ziqiang, and Guo Yuchun.
This document was first published in.2010 and this is the first revision.
Stainless steel corrugated hose and fittings for gas transportation
1 Scope
This document specifies the product specifications, classification and model compilation, materials, appearance, structure and
Dimensions, performance requirements, test methods, inspection rules and markings and installation instructions, packaging, transportation and storage.
This document is applicable to transmission mediums with town gas, nominal size not greater than DN32, nominal pressure (PN) not greater than 0.2MPa.
Stainless steel corrugated hoses and fittings for delivery systems.
This document is not applicable to stainless steel corrugated hoses and fittings for gas transportation containing dimethyl ether.
2 Normative references
The contents of the following documents constitute essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 191 Pictorial markings for packaging, storage and transportation
GB/T 1220 Stainless Steel Bars
GB/T 2828.1 Sampling procedures for inspection by attributes Part 1.Sampling plans for batch inspection based on the acceptance quality limit (AQL)
GB/T 3280 Stainless steel cold-rolled steel sheets and strips
GB/T 5231 Grades and chemical compositions of processed copper and copper alloys
GB/T 7306.1 55° sealing pipe thread Part 1.Cylindrical internal thread and conical external thread
GB/T 7306.2 55° sealing pipe thread Part 2.Conical internal thread and conical external thread
GB/T 8815 Soft polyvinyl chloride plastics for wires and cables
GB/T 10125 Artificial atmosphere corrosion test Salt spray test
GB/T 15065 Black polyethylene plastic for wires and cables
GB/T 23658 Elastomer seals - Material requirements for seals for pipes and fittings used to transport gaseous fuels and hydrocarbon liquids
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
A stainless steel corrugated hose covered with a coating used in gas transmission systems, the length of which cannot be determined before construction but needs to be determined on site.
Note. Hereinafter referred to as "hose".
3.2
Pipe fitting
A general term for connectors such as straight-throughs, elbows, and tees that are connected to hoses and other gas pipelines (or accessories) and installed on site.
3.3
Solution treated corrugated pipe without coating.
Note. Bellows refers to the corrugated tubular shell of the busbar.
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