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High-strength structural bolting assemblies for preloading Part 7: System HR Countersunk head bolt and nut assemblies. Original standard UNE-EN 14399-7-2019 in PDF full version. Additional info + preview on request

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High-strength structural bolting assemblies for preloading Part 9: System HR or HV Direct tension indicators for bolt and nut assemblies. Original standard UNE-EN 14399-9-2019 in PDF full version. Additional info + preview on request

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District heating pipes. Bonded single and twin pipe systems for buried hot water networks. Surveillance systems. Original standard UNE-EN 14419-2019 in PDF full version. Additional info + preview on request

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Amendment 2 - Clamp type coupling assemblies for use with steam hoses rated for pressures up to 18 bar. Original standard UNE-EN 14423-2014 + A2-2019 in PDF full version. Additional info + preview on request

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Amendment 1 - Shower enclosures. Functional requirements and test methods. Original standard UNE-EN 14428-2016 + A1-2019 in PDF full version. Additional info + preview on request

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Explosion resistant equipment. Original standard UNE-EN 14460-2019 in PDF full version. Additional info + preview on request

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