NEN EN ISO 9967 : 2016
Current
The latest, up-to-date edition.
THERMOPLASTICS PIPES - DETERMINATION OF CREEP RATIO
01-12-2013
Committees responsible
National foreword
Method
Foreword
Introduction
1. Scope
2. Symbols
3. Principle
4. Apparatus
5. Test pieces
6. Conditioning
7. Procedure
8. Determination of creep ratio
9. Test report
Annexes
A. (informative) Creep in thermoplastic material
B. (informative) Recommended procedure when testing
pipes with ages other than 21 days +/- 2 days
Tables
1. Number of length measurements
2. Typical set of deflection/time data for one test piece
Figures
1. Example of a device for measuring the inside diameter
of a corrugated pipe
2. Test piece cut out of a perpendicularly ribbed pipe
3. Test piece cut out of a helically wound pipe
4. Deflection/time plot for one test piece
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