Трубы полипропиленовые. Изменение допустимого напряжения в зависимости от времени и температуры
Название (англ.):
Polypropylene pipes; Reduction of permissible stress as a function of time and temperature
Описание (англ.):
Maximum values for permissible stresses as a function of time and temperature are established, for use in calculations on polypropylene pipes, based on homopolymers as well as copolymers.