UNE-EN 16296:2022

This document provides quality levels for imperfections in thermoplastics welded joints. It applies to material thickness above 2,0 mm.

Three quality levels are given in order to permit application for a wide range of welded fabrication. They are designated by symbols B, C and D, where B is the most stringent. The quality levels refer to production quality and not to the fitness-for-purpose (see 3.2) of the manufactured product.

This document applies to the following thermoplastic materials in Table 1:



Table 1 Thermoplastic materials

Abbreviation Material description

ABS Acrylonitrile-butadiene-styrene plastic

ECTFE Ethylene-chlorotrifluoroethylene copolymer

FEP Fluorinated ethylene propylene

PA-U Unplasticized Polyamide

PB Polybutylene

PE Polyethylene

PFA Perfluoroalkoxy

PP-B Polypropylene block copolymer

PP-H Polypropylene homopolymer

PP-R Polypropylene random copolymer

PVC-C Chlorinated polyvinyl chloride

PVC-U Unplasticized polyvinyl chloride (rigid PVC)

PVDF Polyvinylidene fluoride



and to the following welding processes:

heated tool welding;

electrofusion welding;

hot gas welding using filler rod only;

extrusion welding;

solvent welding of pipes.