BS EN 14728:2019 Imperfections in thermoplastic welds. Classification

BS EN 14728:2019

Imperfections in thermoplastic welds. Classification

Status : Current   Published : February 2019



What is this standard about?

This document specifies a system for classifying imperfections that may be encountered in thermoplastic welded joints during manufacture and provides examples of imperfections for the following welding processes:

— heated tool butt welding;

— heated tool socket welding;

— electrofusion socket welding;

— hot gas welding;

— extrusion welding;

— solvent socket welding.

This document does not describe imperfections that may be generated during service or imperfections present before welding, which are due to poor preparation or assembly of components (e.g. fit up). The correct preparation and assembly of components (e.g. fit up) are described in the relevant welding procedure specification (WPS).

This document is also not concerned with the search for the possible influence of these imperfections on the behaviour of joints in relation to the different types of stress to which the latter may be subjected or on methods for preventing such imperfections.

This document can be used in conjunction with EN 16296 to determine the acceptance of welds.

Only imperfections giving rise to discontinuities of materials or changes in shape are taken into consideration in this document, specifying their type, their shape and their positions. This classification can be used to determine the possible origin or causes of the imperfections.

Standard NumberBS EN 14728:2019
TitleImperfections in thermoplastic welds. Classification
Publication Date27 February 2019
Normative References(Required to achieve compliance to this standard)EN 12201-3:2011+A1:2012
Informative References(Provided for Information)EN 16296
ReplacesBS EN 14728:2005
International RelationshipsEN 14728:2019
Draft Superseded By17/30341213 DC
DescriptorsPolymers, Thermoplastic polymers, Cracking, Defects, Plastics, Classification systems, Extrusion welding, Welding, Quality assurance, Designations, Welded joints
Title in FrenchDéfauts dans les assemblages soudés en thermoplastiques. Classification
Title in GermanUnregelmäßigkeiten an Schweißverbindungen von thermoplastischen Kunststoffen. Einteilung
ISBN978 0 580 94192 4
File Size1.755 MB

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