Plastics piping and ducting systems. Thermoplastics pipes. Determination of the longitudinal reversion.

Le présent document décrit deux méthodes d'essai pour déterminer le retrait longitudinal à chaud des tubes en matières thermoplastiques cylindriques à surfaces lisses.

Main informations

Collections

National standards and national normative documents

Publication date

June 1994

Number of pages

8 p.

Reference

NF EN 743

ICS Codes

23.040.20 Plastics pipes

Classification index

T54-021

Print number

1 - 01/05/1994

Sumary

Plastics piping and ducting systems. Thermoplastics pipes. Determination of the longitudinal reversion.

Le présent document décrit deux méthodes d'essai pour déterminer le retrait longitudinal à chaud des tubes en matières thermoplastiques cylindriques à surfaces lisses.

Replaced standards (3)

NF T54-021

November 1980

Standard Cancelled

Plastics. Un-plasticized pipes. Determination of shrinkage after postcure at 150 degrees.

NF T54-047

November 1982

Standard Cancelled

Polyethylene pipes : determination of longitudinal reversion.

NF T54-060

September 1978

Standard Cancelled

Polypropylene pipes. Longitudinal reversion. Test method. Requirements.

Standard replaced by (1)

NF EN ISO 2505

September 2005

Standard Cancelled

Thermoplastics pipes - Longitudinal reversion - Test method and parameters

ISO 2505:2005 specifies a method for determining the longitudinal reversion of thermoplastics pipes, to be carried out in either a liquid or in air. In case of dispute, heated liquid is used as the reference. ISO 2505:2005 is applicable to all thermoplastics pipes with smooth internal and external walls of constant cross-section. It is not applicable to non-smooth structured-wall thermoplastics pipes.

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