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Plastics piping systems for the supply of gaseous fuels - Unplasticized polyamide (PA-U) piping systems with fusion jointing and mechanical jointing - Part 4: Valves (ISO 16486-4:2025). Original standard UNE-EN ISO 16486-4-2025 in PDF full version. Additional info + preview on request

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Geometrical product specifications (GPS). Filtration - Linear profile filters: Gaussian filters. Original standard UNE-EN ISO 16610-21-2025 in PDF full version. Additional info + preview on request

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Geometrical product specifications (GPS). Filtration - Robust profile filters: Gaussian regression filters. Original standard UNE-EN ISO 16610-31-2025 in PDF full version. Additional info + preview on request

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Radiological protection. Medical electron accelerators. Requirements and recommendations for shielding design and evaluation. Original standard UNE-EN ISO 16645-2019 in PDF full version. Additional info + preview on request

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Fusion installations - Criteria for the design and operation of confinement and ventilation systems of tritium fusion facilities and fusion fuel handling facilities. Original standard UNE-EN ISO 16646-2025 in PDF full version. Additional info + preview on request

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Data structures for electronic product catalogues for building services. Data dictionary structures for product catalogues. Original standard UNE-EN ISO 16757-4-2025 in PDF full version. Additional info + preview on request

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