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Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. In September 2013, the Special Equipment Safety Supervision Bureau (hereinafter referred to as "the SESSB") of the former General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China (hereinafter referred to as “the former AQSIQ”) issued the development assignment of Regulation on safety technology for gas cylinder, which requires to formulate a comprehensive safety technical specification for gas cylinder based on seven safety technical specifications, i.e., Supervision regulation on safety technology for gas cylinder, Gas cylinders safety and technical supervision regulation for vehicles (TSG R0009-2009), Gas cylinder appurtenances safety and technical supervision regulation (TSG RF001-2009), Gas cylinder design document appraisal regulation (TSG R1003-2006), Gas cylinder filling licensing regulation (TSG R4001-2006), Regulation for type test of gas cylinders (TSG R7002-2009) and Gas cylinder manufacture supervision inspection regulation (TSG R7003-2011). In October, 2013, a working meeting was held in Beijing to establish a drafting team to develop the drafting work plan of the Regulation, determine the principles, key contents, main problems, structure (clause) framework, make specific division of drafting and prepare a drafting schedule. In August 2015 and August 2016, the drafting team held the 2nd and 3rd meetings in Beijing to discuss and revise the draft, and an exposure draft was formulated. In March 2017, the SESSB issued ZHIJIANTEHAN [2017] No. 13 to solicit opinions from basic-level departments, organizations concerned, experts and the citizens. In August 2017, the drafting team held the 4th meeting in Beijing to study and discuss the opinions solicited and modify the draft accordingly. In October 2017, the SESSB issued ZHIJIANTEHAN [2017] No. 61 to solicit opinions from basic-level departments, organizations concerned, experts and the citizens again. The drafting team studied and discussed the opinions solicited for the second time, and the draft for review was formulated through revision. With the transformation of government functions and the advancement of administrative licensing reform, the drafting team revised the draft for review as required by the SESSB so as to coordinate with the Announcement of the State Administration for Market Regulation on matters related to administrative licensing of special equipment [2019] No.3 and the Regulation for production and filling licensing of special equipment (TSG 07-2019). In May 2020, the SESSB submitted the draft for review to the Special Equipment Safety and Energy Saving Technical Committee of State Administration for Market Regulation (hereinafter referred to as “SAMR”), and then the draft for approval was formulated by the drafting team through revision based on the review opinions. In September 2020, draft for approval of the Regulation was submitted to the WTO/TBT by the SAMR for notification. In November 2020, the WTO/TBT notification ended. On January 4, 2021, the Regulation was approved and issued by the SAMR. The Regulation is developed in accordance with the following basic principles: 1. The comprehensive safety technical specification for gas cylinders is developed according to the Special equipment safety law of the People's Republic of China and Regulations on safety supervision for special equipment, by merging the seven existing safety technical specifications for gas cylinders and straighten out their logical relation, unifying and further clarifying the basic safety requirements for gas cylinders; 2. Adjust the content of administrative license in each link according to the requirements of the administrative licensing reform; 3. Organize the relevant documents of the former AQSIQ on the safety work of gas cylinders in recent years, summarize the specific problems existing during the publicity and implementation of seven safety technical specifications, such as Supervision regulation on safety technology for gas cylinder, and put forward specific regulations in the aspects of materials, design, manufacture, type test, supervision and inspection, gas cylinder attachment, filling and use, periodic inspection, etc. Regulation on safety technology for gas cylinder 1 General provisions 1.1 Purpose The Regulation is formulated according to Special equipment safety Law of the People's Republic of China and Regulations on safety supervision of special equipment with a view to standardize the safe operation of gas cylinder, guarantee people's life and property safety, and promote the socioeconomic development. 1.2 Applicable scope (1) The Regulation is applicable to seamless gas cylinders, welded gas cylinders, cryogenic insulated cylinders, fiber-wrapped gas cylinders, internal-packed gas cylinder and their bundling devices (Note 1-3), for containing compressed gas, high/low pressure liquefied gas, refrigerated liquefied gas, dissolved gas, adsorbed gas, gas mixture (Note 1-2) and liquid with normal boiling point equal to or lower than 60°C, used at ambient temperature of -40°C ~ 60°C (Note 1-1), with nominal volume of 0.4L ~ 3000L, nominal working pressure of 0.2MPa ~ 70MPa (gauge pressure, similarly hereinafter) and the product of pressure and volume greater than or equal to 1.0MPa·L. (2) Large capacity gas cylinders for tube trailers and tube bundle containers and gas cylinders for fire extinguisher shall meet the requirements of general provisions, materials, design and manufacturing in the Regulation. Tube trailers and tube bundle containers shall also meet the requirements of Supervision regulation on safety technology for transportable pressure vessel; relevant provisions of the Regulation may apply to the large capacity gas cylinders with a capacity more than 3,000L and less than or equal to 5,000L. The gas cylinders referred to in this regulation include the cylinder shell and cylinder attachment. See Annex A for the classification, varieties and codes of the major gas cylinders covered in the Regulation. Note 1-1: Ambient temperature of gas cylinders for vehicles (Note 1-4) and fire extinguishers shall be in accordance with the relevant standards. Note 1-2: See Annex B for the classification of gases filled in cylinder such as compressed gas, high (low) pressure liquefied gas, refrigerated liquefied gas, dissolved gas, adsorbed gas and gas mixture, and the physical parameters of common gases. Note 1-3: Gas cylinder bundling device refers to a cylinder group packaging device that bundles several gas cylinders together for road transportation or temporarily fixes them for use, which generally consists of gas cylinders, pipelines and frames. Note 1-4: Gas cylinder for vehicles refers to the gas cylinder fixed on a motor vehicle and containing motor vehicle fuels (such as natural gas, hydrogen, liquefied petroleum gas, liquefied dimethyl ether, etc.). 1.3 Inapplicable scope The Regulation is not applicable to gas cylinders for fire extinguishers that withstand transient pressure only in fire extinguishing, portable dry powder type gas cylinders, water-based gas cylinders for fire extinguishers and brazed structure gas cylinders, and gas cylinders for military equipment, nuclear facilities, aerospace vehicles, railway locomotives, offshore facilities, ships, pits of mines, and dedicated equipment for civil airports. 1.4 Relationship with standards and management systems (1) The Regulation specifies the basic safety requirements of design, manufacture, type test, supervision and inspection, filling and use, regular inspection, etc. of gas cylinders, and the relevant standards of gas cylinders and safety management requirements of relevant organizations for gas cylinders, etc., shall not be lower than the requirements of the Regulation; (2) Generally, gas cylinder products shall be designed and manufactured according to national standards or professional standards. If relevant national standards or professional standards have not been formulated, social organization standards or enterprise standards shall be formulated. The enterprise standard developer shall also provide a comparison table that meets the basic safety requirements of the Regulation in the form shown in Annex C. 1.5 Handling of special cases If a relevant organization adopts new materials, new technologies and new processes, which are inconsistent with the Regulation or which are not required by the Regulation and may have a significant impact on safety performance, it shall be reported to the State Administration for Market Regulation and the Administration shall organize technical review and approval according to the review and approval procedures of new materials, new technologies and new processes. 1.6 Harmonized standards and reference standards (Note 1-5) The harmonized standards for the Regulation refer to the national standards that meet the basic safety requirements of the Regulation. The reference standards for the Regulation refer to the basic standards such as material standards, medium standards, method standards, parts standards, filling standards, inspection standards, etc. Harmonized standards are as follows: (1) GB/T 5099.1 Seamless steel gas cylinders — Part 1: Quenched and tempered steel cylinders with tensile strength less than 1 100 MPa; (2) GB/T 5099.3 Seamless steel gas cylinders — Part 3: Normalized cylinders; (3) GB/T 5099.4 Seamless steel gas cylinders — Part 4: Seamless stainless steel gas cylinders; (4) GB/T 5100 Welded steel gas cylinders; (5) GB/T 5842 Liquefied petroleum gas cylinders; (6) GB/T 11638 Dissolved acetylene cylinders; (7) GB/T 11640 Seamless aluminium alloy gas cylinders; (8) GB/T 17258 Steel cylinders for the on-board storage of compressed natural gas as a fuel for automotive vehicles; (9) GB/T 17259 Steel cylinders for the liquefied petroleum gas for vehicles; (10) GB/T 17268 Non-refillable steel welded cylinders for industrial use; (11) GB/T 24159 Welded insulated cylinders; (12) GB/T 24160 Hoop-wrapped composite cylinders with steel liner for the on-board storage of compressed natural gas as a fuel for automotive vehicles; (13) GB/T 28053 Composite cylinders for breathing apparatus; (14) GB/T 28054 The bundles of seamless steel gas cylinders; (15) GB/T 32566 Welded stainless steel gas cylinders; (16) GB/T 33145 Large capacity seamless steel gas cylinders; (17) GB/T 33147 Liquefied dimethyl ether cylinders; (18) GB/T 34510 Liquefied natural gas cylinders for vehicles; (19) GB/T 35544 Fully-wrapped carbon fiber reinforced cylinders with an aluminum liner for the on-board storage of compressed hydrogen as a fuel for land vehicles Note 1-5: Among the harmonized standards and reference standards listed in the Regulation, for dated references, subsequent amendments (excluding any corrections) to, or revisions of any of these publications do not apply. For undated references, the latest edition of the normative document applies. 1.7 Dedicated gas cylinders Gas cylinders for pure gas shall be dedicated, and only gases compliant to the design documents and manufacture marks are allowed to be filled (except the purging gas used in the filling process), and the manufacture marks and application of gas cylinders shall not be changed, nor shall other gases be mixed. Gas cylinders for gas mixture shall be filled with gas mixture with the same characteristics (Note 1-6) with those specified by the gas cylinder mark. Note 1-6: Gas characteristic refers to toxicity (T), oxidability (O), flammability (F) and corrosivity (C) determined according to GB/T 16163 Classification of gases filled in cylinder and GB/T 34710 Classification of the mixture gas. 1.8 Gas cylinder marks Gas cylinder marks include manufacture mark, periodic inspection mark and others. (1) Generally, manufacture marks include steel impression mark (including mark on nameplate), label mark (pasted on shell, the same below), typographical mark (printed on shell, the same below), electronic reading mark (including radio frequency label and electronic carrier such as two-dimensional code which uses image recognition technology to scan and read data electronically, the same below) and gas cylinder colored mark; (2) Periodic inspection marks include steel impression mark, electronic reading mark, label mark and coating mark, etc.; (3) In addition to the cylinder marking methods in Items (1) and (2), as for gas cylinder for taxi fuel, the gas cylinder manufacturing unit, the installation unit or the inspection agency shall arrange a permanent "TAXI" mark (steel impression mark for steel gas cylinder; resin coated label for fiber-wrapped gas cylinder) on an obvious position of the gas cylinder. 1.8.1 Manufacture marks of gas cylinder 1.8.1.1 Steel impression mark, label mark or typographical mark of gas cylinder (1) Manufacture mark of gas cylinder is the basis to identify gas cylinder, and the content of the mark shall meet the requirements of Annex D hereto and relevant standards; the contents of manufacture mark of small capacity gas cylinders may refer to the requirements of Annex D hereto; (2) The manufacturing unit shall make a manufacture mark on each gas cylinder, such as steel impression mark, label mark or typographical mark; (3) The manufacturing unit shall imprint the concave contained medium, year of manufacture and property right unit mark on the head of steel fuel gas cylinder (Note 1-7), and imprint the words "Prohibited in crowded rooms" on the shield; composite fuel gas cylinders shall be die-cast on the jacket to contain the medium, the year of manufacture, the sign of the property right unit, and the words "Prohibited in crowded rooms". Note 1-7: Fuel gas cylinder refers to a cylinder containing civil fuel gases such as liquefied petroleum gas and liquefied dimethyl ether, which are classified into steel fuel gas cylinders and composite fuel gas cylinders. 1.8.1.2 Electronic reading mark The manufacturing unit of hydrogen cylinders, fiber-wrapped gas cylinders, fuel gas cylinders and gas cylinders for vehicles shall be provided with traceable permanent electronic reading marks on the ex-factory gas cylinders. Other gas cylinder manufacturing units are encouraged to use traceable permanent electronic reading marks on gas cylinders. The electronic reading marks set on steel fuel gas cylinders shall be engraved or welded directly on the shield, and make sure that they cannot be replaced and can be read effectively within the service life of the cylinders. The electronic reading marks shall be able to link to the gas cylinder product publicity platform established by the manufacturing unit through mobile phone scanning, and directly obtain the product information data of each gas cylinder. 1.8.1.3 Colored mark, typeface and colored ring on external surface of gas cylinder Colored mark, typeface and colored ring on gas external surface of gas cylinders shall meet the requirements of GB 7144 Colored cylinder mark for gases; if there is special requirement on colored mark, typeface or colored ring, they shall meet the requirements of corresponding product standard. As for colored mark, typeface and colored ring of gas cylinders that are not listed in any national standards, relevant social organization standards shall be prepared. The name or abbreviation of the gas cylinder filling unit responsible for the use registration shall be marked on the obvious position of gas cylinders. 1.8.1.4 Special colored mark of fuel gas cylinder (1) The registration authorities for cylinder use may, in the city (county), specify a unified special colored mark on the fuel gas cylinders filled in this area; (2) The gas cylinder filling unit with more than a certain number of self-owned fuel gas cylinders may, with the consent of the registration authority for cylinder use, apply several special colored marks on the gas cylinders that have been registered for use. 1.8.1.5 Mark of cryogenic insulated cylinders (including liquefied natural gas cylinders for vehicles) Gas cylinders containing liquid oxygen (O2), nitrous oxide (N2O), liquefied natural gas (LNG) and other media shall be stamped with obviously raised medium symbols such as "O2", "N2O" and "LNG" at the obvious position of the upper head of the shell. 1.8.2 Periodic inspection mark of gas cylinder Method for periodic inspection marking of gas cylinder shall meet the requirements of Annex D herein. The periodic gas cylinder inspection agency shall arrange permanent inspection-passed marks, apply the name of inspection agency and the date of the next inspection on the gas cylinders that pass the inspection one by one (cylinders that cannot be coated may be provided with inspection mark rings instead), and input inspection information in the database related to electronic reading marks. 1.9 Imported and exported gas cylinder Imported and exported gas cylinders shall meet the requirements of Annex E hereto in addition to the relevant requirements on inspection of import-export goods. 1.10 Management requirements Gas cylinder manufacturing units, filling units, inspection and testing institutions, etc., shall strictly implement the Regulation. They shall record the process information of design, manufacture, filling and inspection of gas cylinder products, establish a gas cylinder quality and safety traceability system, and timely record the required information into the gas cylinder quality and safety traceability information platform according to the regulations for information management of special equipment. 2 Materials 2.1 Basic requirements (1) The mechanical, chemical and processing properties and the compatibility with contents shall be considered for the material selection of gas cylinder (generally shell in this clause). (2) Gas cylinders shall be made of materials with mature use experience and included in the harmonized standards of the Regulation; technical indexes such as strength, impact toughness, chemical composition, elastic modulus of materials, and polymerization amount and density of polymer materials shall meet the requirements of harmonized standards; (3) Materials that are not listed in the national standards for gas cylinders shall be verified by type test organizations approved by the General Administration of Market Supervision, and the technical review of new materials shall be conducted in accordance with 1.5 of the Regulation; (4) The material manufacturing unit shall make clear and firm factory steel impression mark or adopt other traceable mark on the obvious position of the material; (5) The material manufacturing unit shall provide the material using unit with complete and clear material quality certificate which shall be printed with traceable information identification, and stamped with the quality inspection seal of the material manufacturing unit; traceable information includes the name of material manufacturing unit, material designation, specifications, furnace batch number, delivery state, issue date of quality certificate; traceable information identifications include two-dimensional code and bar code. (6) Where a gas cylinder manufacturing unit obtains gas cylinder materials from a non-material manufacturing unit, it shall obtain the original quality certificate of the material manufacturing unit or the quality certificate copy stamped with the official seal of the material supply unit or the handler's signature (seal); (7) The material using unit shall be responsible for the authenticity, traceability and consistency of the materials selected for gas cylinders and the material quality certificate. 2.2 Performance requirements (1) Steel gas cylinders shall be made of non-aging killed steel smelted by electric furnace or oxygen converter; (2) Steel seamless gas cylinders shall be made of high-quality carbon manganese steel and chromium molybdenum steel with carbon content not more than 0.38%, with sulfur and phosphorus contents not more than 0.010% and 0.015% respectively, and total sulfur and phosphorus content not more than 0.020%; (3) Steel plates for welded steel gas cylinders shall have good rolling processing and welding performance, with carbon content not greater than 0.20% and carbon equivalent not greater than 0.50%, the content of sulfur and phosphorus contents not more than 0.020% and 0.025% respectively. The material of non-refillable welded steel cylinder shall be carbon steel with carbon content not more than 0.12%; (4) Stainless steel gas cylinders shall be made of austenitic stainless steel or austenitic-ferrite duplex stainless steel, which has good intergranular corrosion resistance and stress corrosion resistance; (5) Materials for aluminum alloy cylinders and aluminum alloy liners shall have good intergranular corrosion resistance and stress corrosion resistance; the contents of lead and bismuth in aluminum alloy materials shall not exceed 0.003%; individual content of other impurity elements shall not be greater than 0.05%, and total content shall not be greater than 0.15%; (6) The actual tensile strength of materials for steel gas cylinders containing medium with a tendency of stress corrosion shall be controlled under 880MPa; (7) The actual tensile strength of steel gas cylinders containing hydrogen or other brittle medium shall be controlled not greater than 880MPa; when its actual yield ratio (ratio of yield strength to tensile strength, the same below) is not greater than 0.9, its actual tensile strength of materials may not exceed 950MPa; (8) If the sulfur and phosphorus contents of the steel cylinder containing compressed natural gas and the steel liner of fiber-wrapped cylinder are not more than 0.005% and 0.010%, respectively, and meet the requirements of hydrogen sulfide stress corrosion test (stress ring method, the same below) in the corresponding standards, the actual tensile strength of the materials may be greater than 880MPa, but not greater than 1,000MPa; the test results of hydrogen sulfide stress corrosion test shall be indicated in the design documents and type test reports for gas cylinders; in case of any changes in the designation, manufacturing unit, smelting method or hot-working method of materials, the gas cylinder manufacturing unit shall conduct hydrogen sulfide stress corrosion test again; (9) For large capacity seamless steel gas cylinders for tube trailers and tube bundle containers containing hydrogen, natural gas or methane, the actual tensile strength of the materials after heat treatment shall be less than or equal to 880MPa, the yield ratio shall be less than or equal to 0.86, and the percentage elongation after break (A50mm) shall be greater than or equal to 20% (the tensile specimen adopts full-wall circular arc flat specimen, the same below); for large capacity seamless steel gas cylinders containing other gases, the actual tensile strength, yield ratio and percentage elongation after fracture (A50mm) of shall be less than or equal to 1,060MPa, 0.92 and 16% respectively after heat treatment. Foreword i 1 General provisions 2 Materials 3 Design 4 Manufacturing 5 Type test 6 Supervision and inspection 7 Gas cylinder attachments 8 Filling and use 9 Periodic inspection 10 Supplementary provisions Annex A Classification, variety and code of gas cylinders Annex B Classification of cylinder gas and physical parameters of common gas Annex C Comparison table between gas cylinder enterprise standard and basic safety requirements of the Regulation Annex D Gas cylinder marks Annex E Imported and exported gas cylinder Annex F Application for identification of gas cylinder design documents Annex G Gas cylinder design document appraisal report Annex H Gas cylinder product data sheet Annex J Application for type test of special equipment (Gas cylinder) Annex K Sampling and management requirements for type test samples of gas cylinders and gas cylinder valves Annex L Type test items of gas cylinders and gas cylinder valves Annex M Type test report of special equipment (gas cylinder and gas cylinder valve) Annex N Type test certificate for special equipment (gas cylinder and gas cylinder valve) Annex n Number method and description of type test certificate for gas cylinder (cylinder valve) Annex P Contact list for special equipment supervision inspection Annex Q Notice for supervision inspection opinions on special equipment Annex R Certificate for (manufacture) supervision and inspection of special equipment (Gas cylinder) Annex S Safety performance supervision and inspection certificate of imported special equipment (Gas cylinder) Annex T Gas cylinder protective cover style Annex U Cylinder periodic inspection item Annex V Gas cylinder periodic inspection Attached table va List of acceptable gas cylinders for regular inspection Attached table vb List of scrapped cylinders Previous development (revision) of relevant rules and regulations 气瓶安全技术规程 1 总则 1.1 目的 为了规范气瓶安全工作，保障人民生命和财产安全，促进经济社会发展，根据《中华人民共和国特种设备安全法》和《特种设备安全监察条例》，制定本规程。 1.2 适用范围 (1)本规程适用于环境温度为－40℃～60℃(注1-1)、公称容积为0.4L～3000L、公称工作压力为0.2MPa～70MPa(表压，下同)，并且压力与容积的乘积大于或者等于1.0MPa·L，盛装压缩气体、高(低)压液化气体、低温液化气体、溶解气体、吸附气体、混合气体(注1-2)以及标准沸点等于或者低于60℃的液体的无缝气瓶、焊接气瓶、低温绝热气瓶、纤维缠绕气瓶、内部装有填料的气瓶，以及气瓶集束装置(注1-3)； (2)长管拖车、管束式集装箱用大容积气瓶以及消防灭火用气瓶，应当满足本规程总则、材料、设计、制造的有关规定，长管拖车、管束式集装箱还应当满足《移动式压力容器安全技术监察规程》的要求；大于3000L并且小于或者等于5000L的大容积气瓶，可以参照执行本规程的有关规定。 本规程所指气瓶含瓶体和气瓶附件，所覆盖的主要气瓶分类、品种以及代号见附件A。 注1-1：车用气瓶(注1-4)、消防灭火用气瓶适用的环境温度应当满足相关标准的要求。 注1-2：压缩气体、高(低)压液化气体、低温液化气体、溶解气体、吸附气体、混合气体等瓶装气体的分类以及常用气体物性参数见附件B。 注1-3：气瓶集束装置，是指将若干气瓶集束在一起用于公路运输或者临时固定使用的瓶组式集装装置，一般由气瓶、管路及框架组成。 注1-4： 车用气瓶，是指固定在机动车上盛装机动车燃料(如天然气、氢气、液化石油气、液化二甲醚等)的气瓶。 1.3 不适用范围 本规程不适用于仅在灭火时承受瞬时压力的消防灭火用气瓶，以及手提式干粉型灭火用气瓶、水基型灭火用气瓶、钎焊结构气瓶，军事装备、核设施、航空航天器、铁路机车、海上设施和船舶、矿山井下、民用机场专用设备使用的气瓶。 1.4 与标准、管理制度的关系 (1)本规程规定了气瓶设计、制造、型式试验、监督检验、充装使用、定期检验等环节的基本安全要求，气瓶的相关标准以及有关单位的气瓶安全管理要求等，不应当低于本规程的规定； (2)气瓶产品一般应当采用国家标准或者行业标准设计制造，尚未制定国家标准、行业标准的，应当制定团体标准或者企业标准，企业标准制定者还应当提供符合本规程基本安全要求的比照表，样式见附件C。 1.5 特殊情况处理 有关单位采用新材料、新技术、新工艺，与本规程的要求不一致，或者本规程未作要求、可能对安全性能有重大影响的，应当向市场监管总局申报，由市场监管总局按照新材料、新技术、新工艺评审和批准程序组织进行技术评审和批准。 1.6 协调标准与引用标准(注1-5) 本规程的协调标准，是指满足本规程基本安全要求的国家标准。本规程的引用标准，是指材料标准、介质标准、方法标准、零部件标准、充装标准、检验检测标准等基础性标准。协调标准如下： (1)GB/T 5099.1《钢质无缝气瓶 第1部分：淬火后回火处理的抗拉强度小于1100MPa的钢瓶》； (2)GB/T 5099.3《钢质无缝气瓶 第3部分：正火处理的钢瓶》； (3)GB/T 5099.4《钢质无缝气瓶 第4部分：不锈钢无缝气瓶》； (4)GB/T 5100《钢质焊接气瓶》； (5)GB/T 5842《液化石油气钢瓶》； (6)GB/T 11638《溶解乙炔气瓶》； (7)GB/T 11640《铝合金无缝气瓶》； (8)GB/T 17258《汽车用压缩天然气钢瓶》； (9)GB/T 17259《机动车用液化石油气钢瓶》； (10)GB/T 17268《工业用非重复充装焊接钢瓶》； (11)GB/T 24159《焊接绝热气瓶》； (12)GB/T 24160《车用压缩天然气钢质内胆环向缠绕气瓶》； (13)GB/T 28053《呼吸器用复合气瓶》； (14)GB/T 28054《钢质无缝气瓶集束装置》； (15)GB/T 32566《不锈钢焊接气瓶》； (16)GB/T 33145《大容积钢质无缝气瓶》； (17)GB/T 33147《液化二甲醚钢瓶》； (18)GB/T 34510《汽车用液化天然气气瓶》； (19)GB/T 35544《车用压缩氢气铝内胆碳纤维全缠绕气瓶》 注1-5：本规程的协调标准、引用标准中，凡是注明标准年号的，其随后所有的修改单(不包括勘误内容)或者修订版本均不适用于本规程；凡是不注明标准年号的，其最新版本适用于本规程。 1.7 气瓶专用 盛装单一气体的气瓶应当专用，只允许充装与设计文件、制造标志规定相一致的气体(充装过程所用的置换气体除外)，不得更改气瓶制造标志和用途，也不得混装其他气体。 盛装混合气体的气瓶应当按照气瓶标志对应的气体特性(注1-6)充装相同特性的混合气体。 注1-6：气体特性，是指按照GB/T 16163《瓶装气体分类》、GB/T 34710《混合气体的分类》等标准确定的毒性(T)、氧化性(O)、燃烧性(F)和腐蚀性(C)。 1.8 气瓶标志 气瓶标志包括制造标志、定期检验标志以及其他标志。 (1)制造标志分为钢印标志(含铭牌上的标志)、标签标志(粘贴于瓶体上的标志，下同)、印刷标志(印刷在瓶体上的标志，下同)、电子识读标志(包括射频标签及采用图像识别技术进行电子扫描读取数据的二维码等电子载体，下同)和气瓶颜色标志； (2)定期检验标志分为钢印标志、电子识读标志、标签标志以及涂敷标志等； (3)除本条(1)、(2)气瓶标志方式外，出租车用燃料气瓶的制造单位或者安装单位、检验机构还应当在气瓶的显著位置制作永久性出租车“TAXI”标志(钢质气瓶采用钢印标志，纤维缠绕气瓶采用树脂覆盖的标签标志等)。 1.8.1 气瓶制造标志 1.8.1.1 气瓶钢印标志、标签标志、印刷标志 (1)气瓶制造标志是识别气瓶的依据，标志的内容应当符合本规程附件D以及相关标准的规定；小容积气瓶制造标志的内容可以参照本规程附件D的规定； (2)制造单位应当在每只气瓶上做出钢印标志、标签标志或者印刷标志等制造标志； (3)制造单位应当在钢质燃气气瓶(注1-7)的封头上压印内凹的盛装介质、制造年份、产权单位标志，在护罩上压印“人员密集的室内禁用”的字样；复合材料燃气气瓶应当在外套上压铸盛装介质、制造年份、产权单位标志，以及“人员密集的室内禁用”的字样。 注1-7：燃气气瓶是指盛装液化石油气、液化二甲醚等民用燃料气体的气瓶，分为钢质燃气气瓶和复合材料燃气气瓶。 1.8.1.2 电子识读标志 氢气气瓶、纤维缠绕气瓶、燃气气瓶和车用气瓶的制造单位，应当在出厂的气瓶上设置可追溯的永久性电子识读标志。鼓励其他气瓶制造单位在出厂气瓶上设置可追溯的永久性电子识读标志。 钢质燃气气瓶上设置的电子识读标志应当直接镂刻或焊接在护罩上，并且确保在钢瓶使用年限内不可更换并能有效识读。电子识读标志应当能够通过手机扫描方式链接到制造单位建立的气瓶产品公示平台，直接获取每只气瓶的产品信息数据。 1.8.1.3 气瓶外表面颜色标志、字样和色环 气瓶外表面的颜色标志、字样和色环，应当符合GB/T 7144《气瓶颜色标志》的要求；颜色标志、字样和色环有特殊要求的，还应当符合相关产品标准的要求；对未列入国家标准的气瓶颜色标志、字样和色环，应当制定团体标准。气瓶的显著部位应当标注办理使用登记的气瓶充装单位名称或者简称。 1.8.1.4 燃气气瓶专用颜色标志 (1)气瓶使用登记机关可以在市(县)区域内，规定在本区域内充装的燃气气瓶采用统一的专用颜色标志； (2)自有产权气瓶超过一定数量的燃气气瓶充装单位，经过气瓶使用登记机关同意后，可以在办理了使用登记的气瓶上涂数本充装单位专用的颜色标志。 1.8.1.5 低温绝热气瓶(含汽车用液化天然气气瓶)标志 盛装液氧(O2)、氧化亚氮(N2O)和液化天然气(LNG)等介质的气瓶，应当在外壳上封头的显著部位，压制明显凸起的“O2”“N2O”“LNG”等充装的介质符号。 1.8.2 气瓶定期检验标志 气瓶定期检验标志的标记方式，应当符合本规程附件D的规定。气瓶定期检验机构应当在检验合格的气瓶上逐只做出永久性的检验合格标志，涂敷检验机构名称和下次检验日期(无法涂敷的气瓶可用检验标志环代替)，并且在电子识读标志对应的数据库中录入检验信息。 1.9 进出口气瓶 进出口气瓶，除应当符合进出口商品检验的相关规定外，还应当满足本规程附 件E的规定。 1.10 管理要求 气瓶制造单位、充装单位、检验与检测机构等，应当严格执行本规程，并且对气瓶产品的设计、制造、充装、检验等过程信息进行记录，建立气瓶质量安全追溯体系，并且按照特种设备信息化管理的规定，及时将所要求的信息录入气瓶质量安全追溯信息平台。 2 材料 2.1 基本要求 (1)气瓶(本章一般指瓶体)材料的选用，应当考虑材料的力学性能、化学性能、工艺性能，及其与介质的相容性； (2)气瓶应当采用具有成熟使用经验并列入本规程协调标准的材料；材料的强度、冲击韧性、化学成分、弹性模量，以及高分子材料的聚合量和密度等技术指标，应当满足协调标准的要求； (3)采用未列入气瓶国家标准的材料，应当经过市场监管总局核准的型式试验机构的型式试验验证，并且按照本规程1.5进行新材料技术评审； (4)材料制造单位应当在材料的明显部位做出清晰、牢固的钢印标志或者其他可追溯的标志； (5)材料制造单位应当向材料使用单位提供材料质量证明书，材料质量证明书的内容应当齐全、清晰，并且印制可追溯的信息化标志，加盖材料制造单位质量检验章；可追溯的信息包括材料制造单位名称、材料牌号、规格、炉批号、交货状态、质量证明书签发日期等内容；可追溯的信息化标志包括二维码、条形码等； (6)气瓶制造单位从非材料制造单位取得气瓶用材料时，应当取得材料制造单位提供的材料质量证明书原件或者加盖材料供应单位公章和经办人签字(章)的复印件； (7)气瓶制造单位应当对所选用的气瓶材料以及材料质量证明书的真实性、可追溯性与一致性负责。 2.2 性能要求 (1)制造钢质气瓶的材料，应当是电炉或者氧气转炉冶炼的无时效镇静钢； (2)钢质无缝气瓶的材料，应当选用含碳量不大于0.38％的优质碳锰钢、铬钼钢，其硫、磷含量应当分别不大于0.010％和0.015％，硫、磷总含量不大于0.020％； (3)钢质焊接气瓶用钢板，应当具有良好的压延加工和焊接性能，其含碳量不大于0.20％，并且碳当量不大于0.50％；硫、磷含量应当分别不大于0.020％和0.025％；非重复充装焊接钢瓶的材料应当选择含碳量不大于0.12％的碳素钢； (4)制造不锈钢气瓶的材料，应当选用奥氏体不锈钢或者奥氏体-铁素体双相不锈钢，并且具有良好的抗晶间腐蚀和抗应力腐蚀性能； (5)铝合金气瓶瓶体以及铝合金内胆用材料，应当具有良好的抗晶间腐蚀性能和抗应力腐蚀性能；铝合金材料中铅和铋的含量均不得大于0.003％；其他杂质元素的单项含量不得大于0.05％，总含量不得大于0.15％； (6)盛装有应力腐蚀倾向介质的钢质气瓶用材料，应当控制材料的实际抗拉强度不大于880MPa； (7)盛装氢气或者其他致脆性介质的钢质气瓶用材料，应当控制材料的实际抗拉强度不大于880MPa；实际屈强比(屈服强度/抗拉强度的比值，下同)不大于0.90时，允许材料的实际抗拉强度不大于950MPa； (8)盛装压缩天然气的钢质气瓶瓶体和纤维缠绕气瓶的钢内胆用材料，如果其硫、磷含量分别不大于0.005％和0.010％，并且符合相应标准中硫化氢应力腐蚀试验(应力环法，下同)要求，允许材料的实际抗拉强度大于880MPa，但是不得大于1000MPa；硫化氢应力腐蚀试验的试验结果，应当在气瓶设计文件和型式试验报告中注明；改变材料的牌号、制造单位、冶炼方法或热加工方法时，气瓶制造单位应当重新进行硫化氢应力腐蚀试验； (9)盛装氢气、天然气或者甲烷等介质的长管拖车、管束式集装箱用大容积钢质无缝气瓶，所用材料热处理后的实际抗拉强度应当小于或者等于880MPa，屈强比应当小于或者等于0.86，断后伸长率(A50mm)应当大于或者等于20％(拉伸试样采用全壁厚圆弧扁试样，下同)；盛装其他气体的大容积钢质无缝气瓶，材料热处理后的实际抗拉强度应当小于或者等于1060MPa，屈强比应当小于或者等于0.92，断后伸长率(A50mm)应当大于或者等于16％。 2.3 境外牌号材料的使用 (1)境外牌号材料应当是境外压力容器或者气瓶法规以及相关产品标准允许使用，并且境外已有相似工作条件下使用实例的材料，其化学成分和力学性能应当符合本规程以及相关协调标准的规定； (2)材料质量证明书应当符合本规程2.1的规定； (3)气瓶制造单位首次使用境外牌号材料制造气瓶前，应当根据相关产品制造工艺要求进行工艺试验，如冷热加工工艺试验、焊接和热处理工艺评定等，并且制定相应的工艺文件。 2.4 材料选用特殊要求 (1)盛装氯、溴化氢、碳酰二氯、氟化氢、氯甲烷、溴甲烷等对铝合金有晶间腐蚀或者应力腐蚀倾向介质的气瓶，不得采用铝合金材料； (2)盛装一氧化碳介质的气瓶，应当优先采用铝合金或者不锈钢材料；如果采用碳钢材料，应当对气体中水和二氧化碳含量进行控制； (3)盛装医用或者食品用气体的气瓶，应当优先采用铝合金或者不锈钢材料；否则应当对气瓶内表面进行洁净处理； (4)盛装可燃气体的纤维缠绕气瓶内胆采用非金属材料的，应当按照本规程1.5的要求进行技术评审； (5)纤维缠绕气瓶的缠绕材料应当选用玻璃纤维、碳纤维或者芳纶纤维，承载层应当采用单一纤维环向缠绕或者全缠绕。 2.5 材料使用和标志移植 (1)气瓶制造单位应当对进厂材料的材料质量证明书和材料标志进行审核，并且按照炉罐号对制造气瓶的金属材料进行化学成分验证分析； (2)制造气瓶的金属材料，气瓶制造单位应当按批进行力学性能验证检验(钢管、钢坯等由热处理最终确定材料力学性能的除外)； (3)制造纤维缠绕气瓶的非金属材料，气瓶制造单位应当按批进行力学性能以及相关技术指标的测定； (4)无缝气瓶用的钢管或者铝合金铸锭，材料制造单位应当分别按照GB/T 5777《无缝和焊接(埋弧焊除外)钢管纵向和/或横向缺欠的全圆周自动超声检测》、GB/T 6519《变形铝、镁合金产品超声波检验方法》等的规定进行无损检测，合格级别应当满足气瓶产品标准的要求；无缝气瓶用的钢坯或者不锈钢棒，材料制造单位应当按照GB/T 226《钢的低倍组织及缺陷酸蚀检验法》进行低倍组织检验，不允许有白点、残余缩孔、分层、气泡、异物和夹杂等缺陷，气瓶制造单位应当进行复验； (5)制造气瓶承压部件的材料，应当在分割或者使用前进行标志移植，保证材料具有可追溯性。 3 设计 3.1 通用要求 3.1.1 基本要求 气瓶设计应当符合以下要求： (1)气瓶设计为整体设计，制造单位对气瓶的设计质量负责； (2)气瓶的设计符合本规程以及相关协调标准的要求； (3)各类气瓶的最小爆破安全系数符合本规程的规定； (4)气瓶疲劳寿命满足本规程设计使用年限的要求(非重复充装气瓶除外)； (5)气瓶疲劳失效表现为裂纹扩展引起的未爆先漏； (6)气瓶盛装介质的特性、分类符合GB/T 16163《瓶装气体分类》的规定。 3.1.2 设计方法 气瓶设计可以采用规则设计方法或者分析设计方法，也可以采用试验验证方法。气瓶制造单位应当根据气瓶使用要求和设计条件，综合考虑所有相关因素、失效模式和安全裕量进行设计，以保证气瓶具有足够的强度、刚度、抗疲劳性和耐腐蚀性。 3.2 压力 3.2.1 气瓶设计压力 气瓶设计压力一般为气瓶的耐压试验压力。 3.2.2 公称工作压力 3.2.2.1 公称工作压力确定原则 (1)盛装压缩气体气瓶的公称工作压力，是指在基准温度(一般为20℃)下的气瓶内气体达到完全均匀状态时的限定(充)压力，一般选用正整数系列； (2)盛装高压液化气体气瓶的公称工作压力，是指60℃时气瓶内气体压力的上限值； (3)盛装低压液化气体气瓶的公称工作压力，是指60℃时所充装气体的饱和蒸气压；低压液化气体在60℃时的饱和蒸气压值按照本规程附件B或者相关气体标准的规定确定，附件B或者相关气体标准没有规定时，可以采用气体供应单位提供并经过气瓶制造单位书面确认的相关数据； (4)盛装溶解气体气瓶的公称工作压力，是指在15℃时的气瓶内气体的化学性能、物理性能达到平衡条件下的静置压力； (5)低温绝热气瓶的公称工作压力，是指在气瓶正常工作状态下，内胆顶部气相空间可能达到的最高压力；根据实际使用需要，可在0.2MPa～3.5MPa范围内选取； (6)盛装标准沸点等于或者低于60℃的液体以及混合气体气瓶的公称工作压力，按照相关标准规定选取； (7)消防灭火用气瓶的公称工作压力，应当不小于灭火系统相关标准中规定的最高工作温度下的最大工作压力。 3.2.2.2 公称工作压力选取 气瓶公称工作压力优先选取表3-1中的压力等级系列。用于特殊需要的气瓶，允许其公称工作压力超出表3-1规定的压力等级，但是应当满足本规程3.2.2.1的规定。消防灭火用气瓶的公称工作压力应当符合有关消防标准的规定。 |
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