40.20 DIS ballot initiated: 12 weeks Oct 29, 2026
CEN
CEN/TC 155 Plastics piping systems and ducting systems
European Norm
23.040.20 Plastics pipes
This document specifies methods for determining the initial ring stiffness of glass-reinforced thermosetting plastics (GRP) pipes. Two methods are given (constant load and constant deflection), and within the specified deflection limits, each is equally valid and can be used for any diameter.
PUBLISHED
EN 1228:1996
IN_DEVELOPMENT
prEN ISO 7685
40.20
DIS ballot initiated: 12 weeks
Oct 29, 2026