ISO 3213 Polypropylene (PP) pipes — Effect of time and temperature on the expected strength - Third Edition
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International Organization for Standardization
Polypropylene (PP) pipes — Effect of time and temperature on the expected strength - Third Edition
N 3213
Annotation
This International Standard specifies the minimum values for expected strength as a function of time and temperature in the form of reference lines, for use in calculations on pipes made of:
— polypropylene homopolymer (PP-H);
— polypropylene block copolymer1) (PP-B);
— polypropylene random copolymer (PP-R);
— polypropylene random copolymer2) with a modified crystallinity (PP-RCT).
1) This is also called heterophasic copolymer.
2) This material can be distinguished by DSC testing or other appropriate method to indicate a second melting peak.
Автоматический перевод:
Полипропилен (PP) трубы — Эффект времени и температуры на ожидаемой силе - Третий Выпуск
Этот Международный стандарт определяет минимальные значения для ожидаемой силы как функция времени и температуры в форме справочных линий для использования в вычислениях на трубах, сделанных из:



