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ISO Certificate: ISO 11119-2 Fully wrapped fibre reinforced composite gas cylinders and tubes up to 450 l with load-sharing metal liners

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SINOGES™ OEM Factory ISO 11119-2 STANDARD Hoop wrapped composite cylinders PRODUCT type approval certificate
SINOGES™ OEM Factory ISO 11119-2 STANDARD Hoop wrapped composite cylinders PRODUCT type approval certificate

Understanding ISO 11119-2:

A Comprehensive Guide to ISO 11119-2:2020 Gas cylinders – Design, construction and testing of refillable composite gas cylinders and tubes Part 2: Fully wrapped fibre reinforced composite gas cylinders and tubes up to 450 l with load-sharing metal liners Certificates

1. Overview of the ISO 11119-2 standard


The ISO 11119-2 standard is part of the ISO 11119 series, which focuses on composite gas cylinders. This specific part, ISO 11119-2, outlines requirements for fully wrapped composite gas cylinders with a load-sharing liner. These liners can be metallic or non-metallic and share the load with the composite wrap that encases the cylinder. The standard specifies criteria for design, materials, construction, and testing, ensuring these cylinders are safe and reliable for various high-pressure gas storage and transport applications.

2. Key Aspects of the ISO 11119-2 standard

The ISO 11119-2 standard is part of the ISO 11119 series related to composite gas cylinders. It specifically focuses on fully wrapped composite gas cylinders with load-sharing liners. These liners can be made of either metallic or non-metallic materials and work in conjunction with the composite wrap to bear the load. Key aspects of this standard include detailed requirements for materials, design, manufacturing processes, testing procedures, and safety measures, ensuring these cylinders are both safe and efficient for high-pressure gas storage and transportation.

3. Importance of the ISO 11119-2 standard

The ISO 11119-2 standard is of significant importance in the context of the design, manufacture, and use of composite gas cylinders with a load-sharing welded metallic liner. Its importance can be understood in several key areas:

  1. Safety: The primary importance of ISO 11119-2 lies in its focus on safety. The standard sets stringent criteria for materials, design, manufacturing, and testing, which are crucial to ensure that the cylinders are capable of safely containing gases under high pressure. This helps to prevent accidents and ensure the safety of users and handlers.

  2. Quality Assurance: By establishing clear guidelines and requirements, ISO 11119-2 helps in maintaining a high level of quality in the production of composite gas cylinders. Manufacturers who adhere to these standards are able to consistently produce cylinders that meet rigorous safety and performance criteria.

  3. International Compliance: ISO standards are recognized globally. Compliance with ISO 11119-2 means that manufacturers can market their products in various countries without having to adapt to different national standards, facilitating international trade and commerce.

  4. Technological Innovation: The standard encourages innovation in the field of materials science and engineering. As it sets performance benchmarks, manufacturers and researchers are motivated to develop new materials and designs that comply with these stringent requirements.

  5. Consumer Confidence: For users and consumers, the knowledge that a product meets an international standard like ISO 11119-2 provides confidence in its safety and reliability. This is especially important for industries where safety is paramount, such as in medical, aerospace, and industrial applications.

  6. Environmental Considerations: The standard may also include environmental considerations, ensuring that the materials and manufacturing processes are not only safe but also environmentally responsible.

  7. Legal and Regulatory Framework: Adhering to ISO 11119-2 can be a requirement in certain legal and regulatory frameworks. Compliance ensures that manufacturers are aligned with legal and industry-specific regulations, avoiding penalties and legal issues.

In summary, ISO 11119-2 is critical for ensuring safety, promoting quality, facilitating international trade, encouraging technological advancement, building consumer trust, respecting environmental considerations, and complying with legal and regulatory requirements in the field of composite gas cylinders.

4. Difference Between The ISO 11119-2 Standard And Other Similar Standards In The Global Markets

ISO 11119-2, focusing on fully wrapped composite gas cylinders with load-sharing liners, differs from other standards like ISO 9809 (for metallic cylinders) and DOT standards (U.S. specific, broader cylinder types) in its material and design focus. It’s tailored for cylinders combining a liner (metallic or non-metallic) with a composite wrap, unique compared to standards addressing traditional metal cylinders or a wider range of types. ISO 11119-2 ensures specific safety and performance for its cylinder type, distinct from the general or metal-focused criteria in other standards.

5. How to obtain the certificate according to the ISO 11119-2 standard

To obtain certification according to the ISO 11119-2 standard for composite gas cylinders, follow these steps:

  1. Understand the Standard: Fully understand ISO 11119-2 requirements.

  2. Design and Manufacture: Ensure cylinders comply with the standard in design and manufacture.

  3. Internal Testing: Conduct rigorous testing and quality control.

  4. Certification Body Engagement: Contact an accredited body for assessment.

  5. Compliance Assessment: Undergo the certification body’s review and testing.

  6. Correct Non-Compliance: Address any issues found.

  7. Obtain Certification: Once compliant, receive the certificate.

  8. Maintain Compliance: Regularly ensure continued adherence to the standard.

ISO 11119 is a specific series of standards focusing on composite gas cylinders, which sets it apart from other gas cylinder standards that are commonly used. These differences can be broadly categorized based on the type of cylinders they cover, the materials involved, and their specific applications. Here’s a comparison between ISO 11119 and other common gas cylinder standards:

  1. ISO 11119 Series:

    • Material and Construction: Focuses on composite gas cylinders. These cylinders typically have a non-metallic liner (thermoplastic or thermosetting) or a metallic liner, which is then wrapped in composite materials like carbon fiber or fiberglass.
    • Applications: Used in a variety of applications where weight and corrosion resistance are important, such as in the medical, firefighting, and aerospace industries.
    • Specifics of ISO 11119-4: This part of the series specifically addresses cylinders with a load-sharing welded metallic liner, combining the strength of metal with the lightweight benefits of composite materials.
  2. ISO 9809 (Steel and Aluminum Gas Cylinders):

    • Material and Construction: Covers traditional steel and aluminum gas cylinders without any composite materials.
    • Applications: Broadly used in industrial, medical, and consumer applications where the weight of the cylinder is less of a concern.
    • Standard Details: Specifies the material, design, construction, and test requirements for these metallic cylinders.
  3. DOT Standards (U.S. Department of Transportation):

    • Material and Construction: Includes a wide range of cylinder types, both metallic and composite.
    • Applications: Focused on transport and storage regulations within the U.S. market.
    • Regulatory Compliance: Emphasizes compliance with U.S. transport regulations and safety in handling and shipping.
  4. European Norms (EN Standards):

    • Material and Construction: Similar to DOT, covers a variety of cylinder types including metal and composites.
    • Applications: Tailored to European market requirements and regulatory frameworks.
    • Focus: Includes specific safety, manufacturing, and performance standards as per EU directives.
  5. Japanese Industrial Standards (JIS):

    • Material and Construction: Covers various types of cylinders, catering to specific Japanese industrial standards.
    • Applications: Designed to meet the needs and regulatory requirements of the Japanese market.

The key differences lie in the materials and construction techniques used, the specific safety and performance requirements, and the intended applications of the cylinders. ISO 11119’s focus on composite materials differentiates it from other standards that may focus on traditional metal cylinders or a broader range of cylinder types. Each set of standards is designed to ensure safety and reliability for its intended applications, taking into account the unique properties and performance requirements of the different types of cylinders.

The ISO 11119 standard, particularly focused on composite gas cylinders, doesn’t specify types of gases in a restrictive manner but rather provides guidelines and requirements for the design, construction, testing, and performance of the cylinders themselves. This means that the cylinders certified under this standard are generally suitable for a wide range of gases, with the specific compatibility depending on the materials used and the design of the cylinder. Common types of gases that can be stored in cylinders complying with the ISO 11119 standard include:

  1. Industrial Gases: Such as oxygen, nitrogen, argon, and helium, which are widely used in various industrial processes.

  2. Medical Gases: Like medical-grade oxygen, nitrous oxide, and other specialized respiratory and anesthetic gases used in healthcare settings.

  3. High-Purity Gases: Used in laboratories and high-tech industries, such as semiconductor manufacturing, where purity levels are critical.

  4. Compressed Air: Commonly used in breathing apparatus for firefighting, scuba diving, and other applications requiring clean, compressed air.

  5. Fuel Gases: Such as hydrogen, natural gas (methane), and propane, used in various energy and heating applications. The compatibility with these gases, especially hydrogen, requires specific attention to material selection due to hydrogen’s unique properties.

  6. Refrigerant Gases: Used in cooling and refrigeration systems.

  7. Specialty and Calibration Gases: Used in analytical instrumentation and process control in various industries.

It’s important to note that the selection of a gas cylinder for a specific gas type should consider not only the compliance with standards like ISO 11119 but also the compatibility of the cylinder materials with the specific gas properties, such as corrosiveness, pressure, and temperature requirements. Manufacturers and users must ensure that the specific cylinder design, including the liner and composite materials, is suitable for the intended gas to ensure safety and performance.

Manufacturers and suppliers of large-capacity gas transport cylinders, regulatory bodies, safety inspectors, and companies involved in the transportation of compressed gases should ensure compliance with ISO 11119.

Obtaining certification according to the ISO 11119 standard for composite gas cylinders offers several significant benefits:

  1. Enhanced Safety: The primary benefit is the assurance of safety. ISO 11119 sets rigorous requirements for the design, manufacturing, and testing of composite gas cylinders. Certification ensures that these cylinders meet high safety standards, reducing the risk of accidents and enhancing the safety of end-users and handlers.

  2. Global Recognition and Market Access: ISO standards are internationally recognized. Having ISO 11119 certification can facilitate access to global markets, as many countries and industries prefer or require compliance with ISO standards for imported goods.

  3. Quality Assurance: Certification under ISO 11119 demonstrates a commitment to quality. It shows that the cylinders have been manufactured to the highest standards, which can lead to improved customer confidence and satisfaction.

  4. Competitive Advantage: In a market with various suppliers, ISO certification can provide a competitive edge. It signals to customers that the products are reliable and of high quality, which can be a decisive factor for businesses and consumers when choosing a supplier.

  5. Compliance with Regulations: Many industries and countries have regulatory requirements for gas cylinders. ISO 11119 certification helps in complying with these regulations, reducing legal and financial risks associated with non-compliance.

  6. Consistency in Production: The process of obtaining certification requires standardization of manufacturing processes. This leads to consistency in production, ensuring that each cylinder meets the same high standards.

  7. Risk Management: The standard’s rigorous testing and evaluation processes help in identifying and mitigating potential risks associated with the use of composite gas cylinders.

  8. Innovation and Improvement: The process of certification often encourages companies to innovate and improve their products and processes. It leads to a better understanding of the product and its market, driving improvements in design, efficiency, and performance.

  9. Environmental Compliance: Many ISO standards, including those for gas cylinders, incorporate considerations for environmental impact. Certification can thus also demonstrate a commitment to environmentally friendly practices.

  10. Brand Image and Reputation: ISO certification enhances the brand image and reputation of a company. It’s a mark of reliability, safety, and quality that can significantly contribute to a company’s reputation in the industry.

In summary, obtaining ISO 11119 certification is beneficial not just for compliance with a set of technical criteria, but also for broader business considerations such as market access, customer trust, product quality, and competitive advantage.

Obtaining certification according to the ISO 11119 standard, which covers composite gas cylinders, involves a detailed and rigorous process. This process ensures that the cylinders meet the high standards for safety, quality, and performance set forth in the standard. Here are the key steps involved in the certification process:

  1. Thorough Understanding of the Standard: Before beginning the certification process, it is crucial to have a comprehensive understanding of the ISO 11119 standard, including its specific requirements and guidelines.

  2. Design and Manufacturing According to the Standard: The gas cylinders must be designed and manufactured in accordance with the specifications laid out in ISO 11119. This includes selecting appropriate materials, following the prescribed manufacturing processes, and ensuring that the final product meets the required design criteria.

  3. Internal Testing and Quality Assurance: Perform rigorous internal testing and quality assurance procedures to ensure that the cylinders meet or exceed the standards set by ISO 11119. This may include tests for strength, durability, and safety compliance.

  4. Engaging an Accredited Certification Body: An accredited third-party certification body must be engaged to independently verify compliance with the standard. It is important to choose a certification body that is recognized and accredited to certify against the ISO 11119 standard.

  5. Documentation Preparation: Prepare comprehensive documentation that details the design, manufacturing process, testing procedures, and quality control measures. This documentation will be reviewed by the certification body.

  6. Certification Body Assessment: The certification body will conduct a thorough assessment, which typically includes a review of the manufacturing process, inspection of the facilities, evaluation of the testing procedures, and review of the quality control systems in place.

  7. Product Testing and Evaluation: The certification body may conduct or review independent testing of the cylinders to ensure they meet all the necessary criteria. This can include both destructive and non-destructive testing.

  8. Addressing Non-Compliance Issues: If any non-compliance issues are found during the assessment, these must be addressed and rectified. This could involve making changes to the manufacturing process, design, or testing procedures.

  9. Certification Issuance: Once the certification body is satisfied that the cylinders meet all the requirements of ISO 11119, they will issue a certificate of compliance. This certificate is generally valid for a specific period, after which re-certification or periodic surveillance audits may be required.

  10. Maintaining Compliance: After certification, it is important to maintain compliance with the standard. This includes ongoing quality assurance, regular testing, and keeping up with any updates or changes to the standard.

  11. Periodic Re-Certification and Audits: Depending on the terms of the certification, periodic re-certification and audits by the certification body may be required to ensure ongoing compliance.

The certification process requires a significant commitment to quality and safety, as well as an investment in time and resources. However, achieving ISO 11119 certification can provide a competitive advantage in the marketplace and assure customers of the product’s safety and reliability.

Yes, the ISO 11119 standard is divided into different parts, each focusing on specific types of composite gas cylinders. These variations cater to different construction methods, materials, and applications, ensuring a comprehensive framework that addresses the diverse needs of gas cylinder technology. Here’s an overview of the different parts within the ISO 11119 standard:

  1. ISO 11119-1: This part specifies the requirements for composite gas cylinders with a seamless or welded metallic liner and hoop-wrapped composite material around the middle section of the cylinder. It is typically used for cylinders where the pressure is not entirely borne by the composite material but is shared between the metal liner and the composite wrap.

  2. ISO 11119-2: This part of the standard focuses on fully wrapped composite gas cylinders with a load-sharing liner. These cylinders have a liner (which can be metallic or non-metallic) that shares the load with the composite wrap that fully encases the liner. This part is relevant for cylinders where both the liner and the composite material contribute significantly to the cylinder’s ability to withstand internal pressure.

  3. ISO 11119-3: It specifies requirements for fully wrapped composite gas cylinders without liners (i.e., liner-less), or with non-load-sharing liners. In these cylinders, the composite material primarily bears the internal pressure, and the liner, if present, does not significantly contribute to the cylinder’s structural strength.

  4. ISO 11119-4: This part is specific to composite gas cylinders with a load-sharing welded metallic liner. It addresses cylinders that combine a welded metal liner with composite reinforcement, providing specifications unique to this hybrid construction method.

Each part of the ISO 11119 series is tailored to address the distinct design and safety considerations of different types of composite gas cylinders. By segmenting the standard into these parts, ISO provides a more targeted approach, allowing manufacturers to adhere to the most relevant guidelines for their specific type of cylinder. This division ensures that all types of composite gas cylinders, regardless of their construction and materials, meet high safety and performance standards.

Manufacturers who have obtained certification according to the ISO 11119 standard must engage in periodic reviews and re-certifications to ensure ongoing compliance with the standard. The frequency of these reviews typically depends on the policies of the certifying body and the specific requirements of the standard. However, there are some general guidelines:

  1. Surveillance Audits: Most certifying bodies conduct surveillance audits periodically. These are usually annual, but the frequency can vary. During these audits, the certifying body assesses the manufacturer’s continued adherence to the standard’s requirements.

  2. Re-Certification: Full re-certification is generally required at regular intervals. This is often every three years, but the exact period can vary depending on the certifying body and possibly the specific risks associated with the type of product being certified.

  3. Changes in Standard or Regulations: If the ISO 11119 standard is updated or if there are changes in relevant regulations, manufacturers may need to review their certification sooner. This ensures that their products and processes remain compliant with the most current standards.

  4. Changes in Manufacturing Process or Materials: If a manufacturer changes its processes, materials, or design, it should review its certification. Changes might affect the product’s compliance with the standard, necessitating a re-evaluation.

  5. Market or Customer Requirements: Sometimes, market conditions or customer requirements may necessitate more frequent reviews or re-certifications.

It’s important for manufacturers to stay informed about the specific requirements set by their certifying body and any updates to the ISO 11119 standard. Maintaining a schedule for regular audits and reviews is crucial for ensuring ongoing compliance and the ability to respond effectively to any changes in standards or manufacturing processes.

Yes, the ISO 11119 standard and its related certification are recognized and used globally. The International Organization for Standardization (ISO) is an international body that develops and publishes standards for a wide range of industries and applications, and its standards are generally accepted worldwide. Here are some key points about the global use of ISO 11119 and its certification:

  1. International Recognition: ISO standards, including ISO 11119, are internationally recognized. This recognition means that products certified to these standards are generally accepted in many countries around the world.

  2. Facilitation of Global Trade: Compliance with ISO standards can facilitate global trade. Manufacturers that produce gas cylinders in accordance with ISO 11119 can more easily export their products to different countries, as many markets trust and recognize ISO certification.

  3. Consistency Across Borders: ISO standards provide a consistent benchmark for quality and safety. By adhering to ISO 11119, manufacturers ensure that their products meet an internationally accepted level of performance, regardless of where they are produced or used.

  4. Local Regulations and Standards: While ISO standards are widely recognized, it’s important to note that specific countries or regions may have additional local regulations or standards that must also be met. Manufacturers should verify the requirements in each market to ensure full compliance.

  5. Harmonization with Other Standards: In many cases, ISO standards, including ISO 11119, are harmonized with other national and regional standards, which helps in reducing technical barriers to trade.

  6. Quality Assurance for Global Customers: For customers around the world, ISO certification is often seen as a mark of quality assurance. It gives customers confidence that the products they are using meet high international standards for safety and performance.

  7. Adaptation to Regional Needs: Although ISO standards are international, they are often designed to allow for some adaptation to regional or local needs, making them versatile and applicable in a global context.

In summary, the ISO 11119 standard and its certification are not only applicable but also beneficial in a global context, aiding in ensuring safety, facilitating trade, and providing a consistent benchmark for quality in the manufacture of composite gas cylinders.

Non-compliance can lead to certification being revoked, legal ramifications, and a loss of reputation. It may also pose safety risks.

There has been a recent amendment to the ISO 11119-3 standard, specifically the 2020 version. This amendment, designated as A1:2023, pertains to the design, construction, and testing of refillable composite gas cylinders and tubes. It particularly focuses on fully wrapped fibre reinforced composite gas cylinders and tubes, with capacities up to 450 liters, and includes those with non-load-sharing metallic or non-metallic liners, or without liners. This amendment represents a recent update to the standard that manufacturers and end-users should be aware of. For detailed information on this amendment, you can refer to the official ISO website or authorized standards distributors.

Compliance with the ISO 11119 standard can impact the cost of manufacturing gas cylinders in several ways:

  1. Initial Investment: Implementing the ISO 11119 standard may require initial investments in new materials, technology, and training. This upfront cost can increase the manufacturing expense.

  2. Testing and Quality Control: The standard demands rigorous testing and quality control processes, which can add to the manufacturing costs due to the need for specialized equipment and personnel.

  3. Certification Costs: Obtaining and maintaining certification involves costs for audits and inspections by accredited bodies.

  4. Operational Efficiency: On the positive side, standard compliance can lead to more efficient manufacturing processes and improved product quality, potentially reducing costs in the long term.

  5. Market Access: Certification can open up new markets and increase demand, potentially offsetting the increased costs with higher sales volumes.

Overall, while ISO 11119 compliance can increase manufacturing costs, it can also provide long-term financial benefits through improved efficiency, product quality, and market opportunities.

Third-party inspectors commonly used for obtaining certification according to the ISO 11119 standard include international certification agencies like SGS, Bureau Veritas, TÜV (Technischer Überwachungsverein), and DNV (Det Norske Veritas). These agencies are known for their expertise in testing, inspection, and certification across various industries, including the manufacturing of gas cylinders. They provide independent verification of compliance with ISO standards and are recognized globally for their services. Selecting a reputable and accredited inspector is crucial for ensuring proper certification.

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