ISO 11119-2-2020 PDF

Full title and description

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. This International Standard specifies minimum requirements for materials, design, construction, workmanship, manufacturing processes, examination and tests at time of manufacture for type‑3 fully wrapped composite cylinders and tubes with load‑sharing metal liners for storage and conveyance of compressed or liquefied gases.

Abstract

This standard covers fully wrapped fibre‑reinforced composite cylinders and tubes (carbon, aramid, glass or mixtures thereof in a matrix) with load‑sharing metal liners, for water capacities up to 450 litres and intended for storage and conveyance of compressed or liquefied gases. It sets out minimum requirements for design life (minimum 15 years), material selection, manufacture, quality control and factory testing. The document excludes welded liners and does not address removable protective sleeves.

General information

• Status: Published (current edition; under periodic review for revision status noted by ISO).
• Publication date: 23 November 2020 (ISO 11119-2:2020).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 23.020.35 (Gas cylinders); ISO/TC 58/SC 3 technical committee.
• Edition / version: Edition 3 (ISO 11119-2:2020) — amended by ISO 11119-2:2020/Amd 1:2023; a new work item for a subsequent edition has been registered.
• Number of pages: 43 pages.

Scope

Specifies minimum requirements for the material, design, construction, workmanship, manufacturing processes, examination and factory tests of type‑3 fully wrapped, fibre‑reinforced composite gas cylinders and tubes with load‑sharing metal liners and water capacities up to 450 L for storage and transport of compressed or liquefied gases. The standard applies to cylinders reinforced with carbon, aramid or glass fibres (or combinations) within a resin matrix and establishes a minimum design life of 15 years. It does not apply to cylinders with welded liners and does not cover removable protective sleeves.

Key topics and requirements

• Definitions, terminology and cylinder classification (type‑3 fully wrapped with load‑sharing metal liner).
• Material requirements for metal liners and composite reinforcement (carbon, aramid, glass fibres and matrix systems).
• Design rules and calculations for pressure containment, including safety factors and required design life (minimum 15 years specified).
• Manufacturing controls: filament winding/layup, bonding to liners, curing and dimensional tolerances.
• Non‑destructive examination and acceptance criteria for liners and composite overwrap.
• Factory testing: hydraulic/hydrostatic and proof tests, burst testing and inspection at manufacture.
• Marking, traceability and documentation requirements for production lots and end items.
• Limitations and exclusions: welded liners not covered; removable protective sleeves treated separately.
• Cross‑references to inspection/requalification and vehicle fuel container standards (see related standards).

Typical use and users

Primary users are composite cylinder designers and manufacturers, material suppliers (fibre and resin), test laboratories, conformity assessment and certification bodies, regulatory authorities, industrial gas suppliers, and integrators that specify cylinder systems (e.g., hydrogen storage, compressed natural gas (CNG) and other high‑pressure gas applications). The standard is used for type approval, factory quality control, procurement specifications and regulatory compliance.

Related standards

ISO 11119‑2 is part of the ISO 11119 series on composite gas cylinders (other parts cover different liner types and constructions). It cross‑references ISO 11439 (vehicle fuel containers for natural gas) and ISO 11623 (periodic inspection and re‑testing of composite cylinders) and is typically used alongside national regulations and transport codes that govern pressure vessels and gas transport.

Keywords

composite gas cylinder, fully wrapped, fibre‑reinforced, load‑sharing liner, type 3 cylinder, filament winding, hydrostatic test, design life, ISO 11119, high‑pressure gas storage, cylinder manufacturing, quality control.

FAQ

Q: What is this standard?

A: ISO 11119‑2:2020 is an International Standard that specifies requirements for the design, materials, manufacture and factory testing of refillable, fully wrapped fibre‑reinforced composite gas cylinders and tubes with load‑sharing metal liners for capacities up to 450 litres.

Q: What does it cover?

A: It covers material selection, design rules, manufacturing processes, workmanship, non‑destructive examination, factory testing (proof, burst etc.), marking and documentation for type‑3 fully wrapped composite cylinders and tubes intended for compressed or liquefied gases. It sets a minimum design life of 15 years and excludes welded liners and removable protective sleeve performance.

Q: Who typically uses it?

A: Cylinder and composite manufacturers, material suppliers, test houses, certification bodies, regulators, and end users in industries such as industrial gases, hydrogen, transport (e.g., CNG) and any sector specifying composite pressure vessels.

Q: Is it current or superseded?

A: ISO 11119‑2:2020 is the current published edition (published 23 November 2020) and has an amendment published in 2023 (ISO 11119‑2:2020/Amd 1:2023). ISO indicates the document is in a periodic review stage for potential revision and a subsequent work item has been registered for a future edition.

Q: Is it part of a series?

A: Yes — it is part of the ISO 11119 series on composite gas cylinders (other parts address different liner types, non‑load‑sharing liners, cylinders without liners, and related test methods). Users commonly consult related parts for complete product and inspection requirements.

Q: What are the key keywords?

A: Composite gas cylinder, fully wrapped, load‑sharing liner, filament winding, hydrostatic test, design life (15 years), carbon/aramid/glass fibre, ISO 11119‑2.