ISO 7685:1998, Plastics piping systems -- Glass-reinforced thermosetting plastics (GRP) pipes -- Determination of initial specific ring stiffness

This International Standard specifies methods for determining the initial specific ring stiffness of glass-reinforced thermosetting plastics (GRP) pipes. Two methods are given, and within the specified deflection limits each is equally valid and may be used for any diameter. This title may contain less than 24 pages of technical content.