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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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Publications of CEN/BT

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DIN EN ISO 4230	2017-03	Standards	Hand- and machine-operated circular screwing dies for taper pipe threads - R series (ISO 4230:2016); German version EN ISO 4230:2016 More	Order from DIN Media
DIN EN ISO 4231	2017-03	Standards	Hand- and machine-operated circular screwing dies for parallel pipe threads - G series (ISO 4231:2016); German Version EN ISO 4231:2016 More	Order from DIN Media
DIN EN ISO 4489	2020-02	Standards	Hardmetals - Sampling and testing (ISO 4489:2019); German version EN ISO 4489:2019 More	Order from DIN Media
DIN EN ISO 4490	2018-08	Standards	Metallic powders - Determination of flow rate by means of a calibrated funnel (Hall flowmeter) (ISO 4490:2018); German version EN ISO 4490:2018 More	Order from DIN Media
DIN EN ISO 4491-1	2023-07	Standards	Metallic powders - Determination of oxygen content by reduction methods - Part 1: General guidelines (ISO 4491-1:2023); German version EN ISO 4491-1:2023 More	Order from DIN Media
DIN EN ISO 4491-2	2023-07	Standards	Metallic powders - Determination of oxygen content by reduction methods - Part 2: Loss of mass on hydrogen reduction (hydrogen loss) (ISO 4491-2:2023); German version EN ISO 4491-2:2023 More	Order from DIN Media
DIN EN ISO 4491-3	2025-12	Standards	Metallic powders - Determination of oxygen content by reduction methods - Part 3: Hydrogen-reducible oxygen (ISO 4491-3:2025); German version EN ISO 4491-3:2025 More	Order from DIN Media
DIN EN ISO 4491-4	2019-09	Standards	Metallic powders - Determination of oxygen content by reduction methods - Part 4: Total oxygen by reduction-extraction (ISO 4491-4:2019); German version EN ISO 4491-4:2019 More	Order from DIN Media
DIN EN ISO 4492	2018-03	Standards	Metallic powders, excluding powders for hardmetals - Determination of dimensional changes associated with compacting and sintering (ISO 4492:2017); German version EN ISO 4492:2017 More	Order from DIN Media
DIN EN ISO 4496	2017-11	Standards	Metallic powders - Determination of acid-insoluble content in iron, copper, tin and bronze powders (ISO 4496:2017); German version EN ISO 4496:2017 More	Order from DIN Media

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