DIN - DVS 2207-5
Welding of Thermoplastics - Welding of PE Casing Pipes - Fittings and Isolating Valves
Organization: | DIN |
Publication Date: | 1 July 1997 |
Status: | inactive |
Page Count: | 6 |
ICS Code (Welding processes): | 25.160.10 |
scope:
This Supplement to Directive DVS 2207-5 applies to all PE-HD factory and site casing pipe welded joints on segmental bonded prefabricated fittings (elbows, T-pieces, adapters and anchor points) in accordance with DIN EN 448 and underground isolating valves within the scope of plastic casing pipe systems for district heating networks in accordance with DIN EN 488.
The HS (heated plate) welding method must be used for factory casing pipe joints and the WE (hot gas extrusion) method in exceptional and special cases.
Site casing pipe joints must be made using the WE method and the WZ (hot gas string-bead) method in exceptional and special cases.
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