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Standards UNE - Spanish national standards - Page 5424
Spanish national standards UNE are published by the company AENOR, which deals with the development of national standardization and certification in all industrial and services sectors. Its aim is to contribute to the quality, competitiveness and improvement of companies and to protect the environment.
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UNE-EN 4551:2003
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Aerospace series - Pipe coupling 37°, in heat resisting steel - Swivel nuts - Inch series (Endorsed by AENOR in April of 2003.)
WITHDRAWN published on 1.11.2014
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UNE-EN 4552:2003
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Aerospace series - Pipe coupling 37°, spherical, in heat resisting steel - Straight nipples, welded end - Inch series (Endorsed by AENOR in April of 2003.)
WITHDRAWN published on 1.9.2015
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UNE-EN 45544-1:2000
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Workplace atmospheres. Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours. Part 1: General requirements and test methods.
WITHDRAWN published on 19.12.2000
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UNE-EN 45544-1:2015
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Workplace atmospheres - Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours - Part 1: General requirements and test methods (Endorsed by AENOR in March of 2015.)
WITHDRAWN published on 28.8.2025
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UNE-EN 45544-2:2000
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WORKPLACE ATMOSPHERES. ELECTRICAL APPARATUS USED FOR THE DIRECT DETECTION AND DIRECT CONCENTRATION MEASUREMENT OF TOXIC GASES AND VAPOURS. PART 2: PERFORMANCE REQUIREMENTS FOR APPARATUS USED FOR MEASURING CONCENTRATIONS IN THE REGION OF LIMIT VALUES.
WITHDRAWN published on 19.12.2000
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UNE-EN 45544-2:2015
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Workplace atmospheres - Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours - Part 2: Performance requirements for apparatus used for exposure measurement (Endorsed by AENOR in March of 2015.)
WITHDRAWN published on 28.8.2025
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UNE-EN 45544-3:2000
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WORKPLACE ATMOSPHERES. ELECTRICAL APPARATUS USED FOR THE DIRECT DETECTION AND DIRECT CONCENTRATION MEASUREMENT OF TOXIC GASES AND VAPOURS. PART 3: PERFORMANCE REQUIREMENTS FOR APPARATUS USED FOR MEASURING CONCENTRATIONS WELL ABOVE LIMIT VALUES.
WITHDRAWN published on 19.12.2000
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UNE-EN 45544-3:2015
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Workplace atmospheres - Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours - Part 3: Performance requirements for apparatus used for general gas detection (Endorsed by AENOR in March of 2015.)
WITHDRAWN published on 28.8.2025
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UNE-EN 45544-4:2001
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Workplace atmospheres - Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours -- Part 4: Guide for selection, installation, use and maintenance.
WITHDRAWN published on 30.4.2001
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UNE-EN 45545-2:2013
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Railway applications - Fire protection on railway vehicles - Part 2: Requirements for fire behavior of materials and components
WITHDRAWN published on 23.12.2013
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