Abstract / scope
ISO 9969:2007 specifies a test method for determining the ring stiffness of thermoplastics pipes having a circular cross section.
ISO 9969:2007Withdrawn
Thermoplastics pipes — Determination of ring stiffness
Tubes en matières thermoplastiques — Détermination de la rigidité annulaire
This edition has been replaced by ISO 9969:2016.