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Hydrogen Technologies Standards form the basic framework for market ramp-up
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Climate change Standards and specifications support climate targets
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Projects of CEN/TC 23/WG 11

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Document number	Begin	Title	Comment
DIN EN ISO 9809-2 rev	2026-09-01	Gas cylinders - Design, construction and testing of refillable seamless steel gas cylinders and tubes - Part 2: Quenched and tempered steel cylinders and tubes with tensile strength greater than or equal to 1 100 MPa More	Comment
DIN EN ISO 9809-1 rev	2026-09-01	Gas cylinders - Design, construction and testing of refillable seamless steel gas cylinders and tubes - Part 1: Quenched and tempered steel cylinders and tubes with tensile strength less than 1 100 MPa More	Comment
DIN EN ISO 9809-3 rev	2026-09-01	Gas cylinders - Design, construction and testing of refillable seamless steel gas cylinders and tubes - Part 3: Normalized steel cylinders and tubes More	Comment
DIN EN ISO 9809-4	2023-10-13	Gas cylinders - Design, construction and testing of refillable seamless steel gas cylinders and tubes - Part 4: Stainless steel cylinders with an Rₘ value of less than 1 100 MPa (ISO 9809-4:2025); German version EN ISO 9809-4:2026 More	Comment

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