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ISO 7685

Glass-reinforced thermosetting plastics (GRP) pipes — Determination of initial ring stiffness

General information

60.00     Dec 4, 2025

ISO

ISO/TC 138/SC 6

International Standard

23.040.20  

Scope

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.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 7685:2019

NOW

PROJECT
ISO 7685
60.00 Standard under publication
Dec 4, 2025