ISO/AWI 7685
Glass-reinforced thermosetting plastics (GRP) pipes — Determination of initial ring stiffness
Reference number
ISO/AWI 7685
Edition 3
Working draft
ISO/AWI 7685
A working group has prepared a draft.
Will replace ISO 7685:2019


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.

General information

  •  : Under development
    : New project registered in TC/SC work programme [20.00]
  •  : 3
  • ISO/TC 138/SC 6
  • RSS updates

Got a question?

Check out our Help and Support

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)