Draft
International Standard
ISO/DIS 4433-2
Thermoplastics piping systems — Preliminary evaluation of the resistance to chemicals — Part 2: Polyolefin piping components-polybutene (PB), polyethylene (PE), crosslinked polyethylene (PE-X), polypropylene (PP)
Reference number
ISO/DIS 4433-2
Edition 2
© ISO 2026
Projet Norme internationale
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Projet de Norme internationale au stade enquête auprès des membres de l’ISO.
Remplacera ISO 4433-2:1997

ISO/DIS 4433-2

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CHF 67
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Résumé

The method of classification given in this part of ISO 4433 serves to determine the chemical resistance of polyolefin pipes, fittings and valve components designed for the conveyance of chemicals in the absence of pressure and stress such as earth loads, dynamic internal stresses.

To determine the chemical resistance, the method uses the change in mass and the changes in tensile properties which result from the storage of test pieces, taken from such pipes, fittings and valve components, in chemicals. The test is carried out in accordance with ISO/DIS 4433-1.

This part of ISO 4433 is also applicable to polyolefin sheets as appropriate.

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