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GB/T 35544-2025 English PDF

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GB/T 35544-2025: Fully-wrapped carbon-fiber reinforced cylinders with an aluminum liner for the on-board storage of compressed hydrogen as a fuel for land vehicles
Status: Valid

GB/T 35544: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 35544-2025English1159 Add to Cart 8 days [Need to translate] Fully-wrapped carbon-fiber reinforced cylinders with an aluminum liner for the on-board storage of compressed hydrogen as a fuel for land vehicles Valid GB/T 35544-2025
GB/T 35544-2017English515 Add to Cart 0--9 seconds. Auto-delivery Fully wrapped carbon fiber reinforced cylinders with an aluminum liner for the on-board storage of compressed hydrogen as a fuel for land vehicles Valid GB/T 35544-2017

Basic data

Standard ID GB/T 35544-2025 (GB/T35544-2025)
Description (Translated English) Fully-wrapped carbon-fiber reinforced cylinders with an aluminum liner for the on-board storage of compressed hydrogen as a fuel for land vehicles
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J74
Classification of International Standard 23.020.30
Word Count Estimation 58,570
Date of Issue 2025-08-29
Date of Implementation 2025-12-01
Older Standard (superseded by this standard) GB/T 35544-2017
Issuing agency(ies) State Administration for Market Regulation, National Standardization Administration

GB/T 35544-2025: Fully-wrapped carbon-fiber reinforced cylinders with an aluminum liner for the on-board storage of compressed hydrogen as a fuel for land vehicles


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ICS 23.020.30 CCSJ74 National Standard of the People's Republic of China Replaces GB/T 35544-2017 Compressed hydrogen cylinder with aluminum liner and carbon fiber wrap for vehicle use Released on August 29, 2025 Implementation on December 1, 2025 State Administration for Market Regulation The National Standardization Administration issued

Table of Contents

Preface III 1 Scope 1 2 Normative references 1 3 Terms, Definitions and Symbols 2 4 Type, parameters, classification and model 4 5 Technical requirements and test methods 5 6 Inspection Rules 23 7 Installation and protection 27 8 Marking, packaging, transportation and storage 27 9 Product certificate and batch inspection quality certificate 28 Appendix A (Normative) Test Parameters Tolerance 30 Appendix B (Normative) Guide to Daily Maintenance and Inspection of Gas Cylinders 32 Appendix C (Informative) Design Guide for Gas Cylinder Mouth and Valve Seal Dimensions 34 Appendix D (Normative) Performance Evaluation Method of O-rings for Gas Cylinders 36 Appendix E (Normative) Interlaminar Shear Test Method 39 Appendix F (Normative) Gas Cylinder Fire Test Method 43 Appendix G (Informative) Batch Inspection Quality Certificate for Compressed Hydrogen Gas Cylinders with Aluminum Liners and Carbon Fiber Fully Wrapped for Vehicles 49 Reference 51 Preface 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 35544-2017 "Compressed hydrogen gas cylinders with aluminum liner and carbon fiber fully wrapped for vehicles" and In addition to structural adjustments and editorial changes, the main technical changes are as follows. a) The applicable scope has been changed, the nominal working pressure has been changed to 35MPa and 70MPa, and the nominal volume has been changed to greater than or equal to 20L and not more than 450L (see Chapter 1, Chapter 1 of the.2017 edition); b) Some terms and definitions have been changed (see 3.1, 3.1 of the.2017 edition); c) The cylinder structure diagram has been changed (see 4.1, 4.1 of the.2017 edition); d) The classification of gas cylinders has been changed (see 4.3, 4.3 of the.2017 edition, where A2 and B2 correspond to A Class A, Class B); e) The hydrogen quality requirements have been changed (see 5.1.6, 5.1.6 of the.2017 edition); f) The general requirements for materials have been changed (see 5.2.1, 5.2.1 of the.2017 edition); g) The material requirements for aluminum liner have been changed (see 5.2.2.2 of the.2017 edition); h) Modified the resin material requirements (see 5.2.3, 5.2.3 of the.2017 edition); i) Added relevant provisions on end plugs (see 5.2.5); j) The design requirements for carbon fiber and aluminum liner have been changed (see 5.3.1, 5.3.1 of the.2017 edition); k) The requirements for fiber stress ratio and minimum design burst pressure have been changed (see 5.3.2.3, 5.3.2.2 and 5.3.2.3 of the.2017 edition); l) The maximum allowable defect size requirement for non-destructive testing of aluminum liner has been deleted (see 5.3.4 of the.2017 edition); m) The requirement that the hardness of each aluminum liner should be tested after heat treatment has been deleted (see 5.4.2.3 of the.2017 edition); n) Modified the requirements for fiber winding (see 5.4.4, 5.4.4 of the.2017 edition); o) Added relevant provisions on cylinder valves (see 5.5.1); p) The provisions on safety pressure relief devices for gas cylinders have been modified (see 5.5.2, 5.5.1 and 5.5.2 of the.2017 edition); q) Added calculation methods for safe discharge capacity of gas cylinders and rated discharge capacity of pressure relief devices (see 5.5.3); r) Added the requirement that accessories for category A1 and B1 gas cylinders must meet the safety requirements for use without disassembly inspection throughout the life of the cylinder (see 5.5.6); s) The cold bend test method has been changed (see 5.6.4.4.2 and 5.6.4.5.2, and 6.1.4.4.1 and 6.1.4.5.1 of the.2017 edition); t) The interlaminar shear strength value of the wound composite material has been changed (see 5.7.1.1.1, 6.2.1.1.2 of the.2017 edition); u) The test method for tensile test has been changed (see 5.7.1.2.2, 6.2.1.2.1 of the.2017 edition); v) The airtightness test qualification criteria and test methods have been changed (see 5.7.4, 6.2.4 of the.2017 edition); w) The qualified criteria for the hydraulic burst test have been changed (see 5.7.5.1 and 6.2.5.2 of the.2017 edition); x) Modified the qualified criteria for the normal temperature pressure cycle test, crack tolerance test and drop test (see 5.7.6.1, 5.7.10.1 and 5.7.12.1, 6.2.6.2, 6.2.10.2 and 6.2.12.2 of the.2017 edition); y) Changed the pressure cycle frequency requirements (see 5.7.6.2, 5.7.8.2 and 5.7.10.2, 6.2.6.1, 6.2.8.1 and 6.2.10.1); z) The fire test qualification criteria have been changed (see 5.7.7.1, 6.2.7.3 of the.2017 edition); aa) Modified the relative humidity requirements for the extreme temperature pressure cycle test and the normal temperature and extreme temperature pressure cycle test (see 5.7.8.2 and 5.7.16.2.3, 6.2.8.1 and 6.2.16.2 of the.2017 edition); bb) Changed the temperature requirement for the medium in the bottle for the extreme temperature and pressure cycle test (see 5.7.8.2 and 6.2.8.1 of the.2017 edition); cc) Changed the requirements for the division of zones for environmental test cylinders (see 5.7.11.2.1 and 6.2.11.1 of the.2017 edition); dd) The environmental liquids for environmental test exposure have been changed (see 5.7.11.2.3 and 6.2.11.3 of the.2017 edition); ee) The qualification criteria and test methods for the hydrogen circulation test have been changed (see 5.7.13, 6.2.13 of the.2017 edition); ff) The general requirements for durability testing have been changed (see 5.7.15.2.1 and 6.5.15 of the.2017 edition); gg) The test methods for the normal temperature and extreme temperature pressure cycle test and the extreme temperature pressure leakage test (performance test) have been changed. (See 5.7.16.2.3 and 5.7.16.2.4, and 6.2.16.2 and 6.2.16.3 of the.2017 edition); hh) Changed the sampling rules for gas cylinders (see 6.1.2.2.2, 7.1.2.2.2 of the.2017 edition); i) Added the requirements for the number of inner liner used for type testing (see 6.2.2); j) Added relevant provisions on design changes (see 6.3.1 and 6.3.2); kk) The type tests required for design changes have been changed (see Table 10, Table 7 of the.2017 edition); l) Deleted the provision that the inner liner and cylinder of the type test should be treated to eliminate the function of use after the test (see the.2017 edition 7.2.3); mm) Added installation and protection requirements (see Chapter 7); nn) The relevant provisions on gas cylinder marking have been modified (see 8.1, 8.1 of the.2017 edition); oo) The contents of the gas cylinder product certificate have been changed (see 9.1.2, 9.1.2 of the.2017 edition); pp) Deleted the provisions on the quality certificate for batch inspection of gas cylinders (see 9.2.2 of the.2017 edition); qq) Added Appendix A (Normative) Test Parameter Tolerances (see Appendix A); rr) Added Appendix B (Normative) Daily Maintenance and Inspection of Gas Cylinders (see Appendix B); ss) Added Appendix D (Normative) Performance Assessment Method for O-rings for Gas Cylinders (see Appendix D); tt) Added Appendix E (Normative) Interlaminar Shear Test Method (see Appendix E); uu) Added Appendix F (Normative) Gas Cylinder Fire Test Method (see Appendix F); vv) Deleted the provisions on the method for determining the maximum allowable defect size of aluminum liner in the appendix (see Appendix A of the.2017 edition); ww) Deleted the provisions of the appendix on temperature-driven safety pressure relief devices and valve type test methods and qualification indicators (see the.2017 edition Appendix B). 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 National Technical Committee for Standardization of Gas Cylinders (SAC/TC31). This document was drafted by. Zhejiang University, Dalian Boiler and Pressure Vessel Inspection and Testing Institute Co., Ltd., State Administration for Market Regulation, China Special Equipment Testing and Research Institute, Shenyang Oushidun New Materials Technology Co., Ltd., Beijing Tianhai Industrial Co., Ltd., Sinoma Science & Technology (Suzhou) Co., Ltd., Shijiazhuang Enric Gas Machinery Co., Ltd., Shandong Aoyang New Energy Technology Co., Ltd., Zhejiang Special Equipment Science and Technology Co., Ltd. Research Institute, Beijing Hydelight Technology Co., Ltd., Foshan Nanhai District South China Hydrogen Safety Promotion Center, CIMC Enric Investment Holding (Shenzhen) Co., Ltd., Shanghai Special Equipment Supervision and Inspection Technology Research Institute, Beijing Ketai Technology Co., Ltd., Dalian University of Technology, Shanghai Qinghai University Ray New Energy Technology Co., Ltd. The main drafters of this document are. Zheng Jinyang, Hu Jun, Liao Binbin, Gao Jixuan, Chang Yanyan, Hua Zhengli, Huang Qianghua, Han Bing, Jiang Jiang, Zhang Baoguo, Yang Minggao, Bo Ke, Li Qinan, Wang Hongxia, Bai Jiangkun, Guo Weican, Han Wulin, Wang Yanhui, Huang Gai, Yue Zengzhu, Liu Yan, Yang Baoying, Yuan Yiwen, Zhao Liang, Li Bei, Li Shidong, and Wang Qilin. This document was first published in.2017 and this is the first revision. Compressed hydrogen cylinder with aluminum liner and carbon fiber wrap for vehicle use

1 Scope

This document specifies the types, parameters, classifications and models of compressed hydrogen gas cylinders with aluminum liner and carbon fiber wrapped around them for vehicles (hereinafter referred to as cylinders). Technical requirements and test methods, inspection rules, as well as installation, protection, marking, packaging, transportation and storage requirements. This document is applicable to the design and manufacture of nominal working pressures of 35MPa and 70MPa, nominal volumes greater than or equal to 20L and not greater than 450L, operating temperature not lower than -40℃ and not higher than 85℃, fixed on a motor vehicle with at least four wheels and a special machine in the field (factory) Refillable gas cylinders used to hold hydrogen fuel on electric vehicles (hereinafter referred to as vehicles).

2 Normative references

The contents of the following documents constitute the 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 228.1 Tensile tests on metallic materials - Part 1.Room temperature test methods GB/T 230.1 Rockwell hardness test for metallic materials - Part 1.Test method GB/T 231.1 Metallic materials Brinell hardness test Part 1.Test method GB/T 232 Metallic materials bending test method GB/T 528 Determination of tensile stress-strain properties of vulcanized rubber or thermoplastic rubber GB/T 533-2008 Determination of density of vulcanized rubber or thermoplastic rubber GB/T 1458 Test method for mechanical properties of annular specimens of filament-wound reinforced composites GB/T 1677 Determination of epoxy value of plasticizers GB/T 2941-2025 Rubber physical test methods - General procedures for specimen preparation and conditioning GB/T 3191 Aluminium and aluminium alloy extruded bars GB/T 3246.1 Microstructure test methods for wrought aluminium and aluminium alloy products Part 1.Microstructure test methods GB/T 3246.2 Microstructure test methods for wrought aluminium and aluminium alloy products Part 2.Macrostructure test methods GB/T 3362 Test method for tensile properties of carbon fiber multifilament GB/T 3452.2 O-rings for hydraulic and pneumatic applications - Part 2.Specification for appearance quality inspection GB/T 3512 Vulcanized rubber or thermoplastic rubber - Hot air accelerated aging and heat resistance tests GB/T 3880.1 Aluminium and aluminium alloy plates and strips for general industrial use Part 1.General requirements GB/T 3880.2 Aluminium and aluminium alloy plates and strips for general industrial use Part 2.Mechanical properties GB/T 3880.3 Aluminium and aluminium alloy plates and strips for general industrial use Part 3.Dimensional deviations GB/T 3934 Technical requirements for common thread gauges GB/T 4437.1 Aluminium and aluminium alloy hot extruded tubes Part 1.Seamless round tubes GB/T 4612 Determination of epoxy equivalent of plastic epoxy compounds GB/T 5720 Test method for O-ring rubber seals GB/T 6031 Determination of hardness of vulcanized rubber or thermoplastic rubber (10IRHD~100IRHD) GB/T 6519 Ultrasonic testing method for wrought aluminum and magnesium alloy products GB/T 7690.3 Test methods for reinforcing yarns - Part 3.Determination of breaking strength and elongation at break of glass fibers

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