prEN 18205
Qualification of Welding Procedures for Plastic Materials
Draft New
Comment end date
2025-09-02
Export comments
Project stage codes
1. Decision on WI Proposal
2. Projektas
3. Viešoji apklausa
From 2025-07-04
till 2025-09-02
4. Closure of enquiry
5. Submission to Formal Vote
Organisation
CEN Europos standartizacijos komitetasICS
25.160.10 - Welding processesTechnical Committee
TK 68 PlasticsForeignTC'S
CEN/TC 249Number of comments
0Comment start date
2025-07-04Scope
This document specifies a procedure to qualify a preliminary welding procedure specification (pWPS) by welding procedure tests to produce a qualified welding procedure specification (WPS). This document applies to the following thermoplastic welding processes: hot gas welding: round nozzle, speed, wedge; extrusion welding; heated tool welding: butt, socket, wedge. The document applies to the welding of the following products: sheet, pipe (unreinforced, solid wall only); fittings (unreinforced only); lining membrane. This document covers the welding of the following groups of materials: a) for sheets, pipes and fittings: PVC (including all kinds of PVC-U, PVC-C) and ABS; PP; PE; PVDF; ECTFE, PFA and FEP; b) for lining membranes: PVC-P; PE; ECB;PP; c) for pipes and fittings only: PA-U 11 and PA-U 12