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Norm
ISO 9969:1994
Issue date: 1994 02 17
Thermoplastics pipes — Determination of ring stiffness
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 i...
Withdrawn: 2007 12 03
Publisher:
International Organization for Standardization
Format:
Digital | 5 Pages
Language:
English
Currently valid:
ICS
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.
