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STANDARD 4437-2
Second edition
Plastics piping systems for the supply
of gaseous fuels — Polyethylene
(PE) —
Part 2:
Pipes
Systèmes de canalisations en plastique pour la distribution de
combustibles gazeux — Polyéthylène (PE) —
Partie 2: Tubes
PROOF/ÉPREUVE
Reference number
ISO 4437-2:2023(E)
© ISO 2023
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ISO 4437-2:2023(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 4437-2:2023(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 . 3
3.2 Terms related to material . 4
3.3 Terms related to material characteristics . 5
3.4 Terms related to service conditions . 5
3.5 Terms related to joints . 6
4 Symbols and abbreviated terms.6
4.1 Symbols . 6
4.2 Abbreviated terms . 6
5 Material. 7
5.1 Compound for pipes . 7
5.2 Compound for identification stripes . 7
5.3 External reworked and recycled material . 7
6 General characteristics . 8
6.1 Appearance .
...