Reference number
ISO 9969:1994
© ISO 2025
ISO 9969:1994
Thermoplastics pipes — Determination of ring stiffness
Edition 1
1994-02
Withdrawn
Withdrawn (Edition 1, 1994)

Abstract

The principle of the method specified is vertically compressing a length of pipe supported horizontally between two parallel flat plates moved at a constant speed which is dependent upon the diameter of the pipe, measuring the force and the deflection, plotting the force versus deflection, and calculating the ring stiffness as a function of the force necessary to produce a deflection of 0,03 nominal diameter diametrically across the pipe. Applies to pipes having a circular cross-section.

General information

  • Status
     : Withdrawn
    Publication date
     : 1994-02
    Stage
    : Withdrawal of International Standard [95.99]
  • Edition
     : 1
    Number of pages
     : 5
  • Technical Committee :
    ISO/TC 138/SC 5
    ICS :
    23.040.20 
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