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STANDARD 4437-5
Second edition
Plastics piping systems for the supply
of gaseous fuels — Polyethylene
(PE) —
Part 5:
Fitness for purpose of the system
Systèmes de canalisations en plastique pour la distribution de
combustibles gazeux — Polyéthylène (PE) —
Partie 5: Aptitude à l'emploi du système
PROOF/ÉPREUVE
Reference number
ISO 4437-5:2023(E)
© ISO 2023
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ISO 4437-5:2023(E)
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© ISO 2023
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Published in Switzerland
ii
PROOF/ÉPREUVE © ISO 2023 – All rights reserved
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ISO 4437-5:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
3.1 Terms related to geometry . 2
3.2 Terms related to material . 3
3.3 Terms related to material characteristics . 3
3.4 Terms related to service conditions . 4
3.5 Terms related to joints . 4
4 Symbols and abbreviated terms.5
4.1 Symbols . 5
4.2 Abbreviated terms . 6
5 Fitness for purpose of the system . 6
5.1 Method of preparation of assemblies for testing . 6
5.1.1 General . 6
5.1.2 Butt fusion joints . 6
5.1.3 Electrofusion joints . 7
5.1.4 Mechanical joints .
...