ISO 7685:2026
ISO 7685:2026 Glass-reinforced thermosetting plastics (GRP) pipes - Determination of initial ring stiffness
standard byInternational Organization for Standardization , 01/01/2026
standard byInternational Organization for Standardization , 01/01/2026
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.